ADJUSTED. The term "adjusted" simply means that the watch has been calibrated and keeps time under various conditions. These conditions could be temperature, meaning that for any temperature the watch will maintain accurate time. Also it could mean that the watch keeps accurate time in various positions, i.e, face up, face down, stem facing left, stem facing right. Most watches are also calibrated to maintain a constant time as the main spring is winding down. 'ALL-OR-NOTHING' PIECE. This is used in better quality repeating watches and ensures that the hour striking mechanism is only struck when a push-piece is pushed fully home. (Ref: Richard French, "Servicing a Quarter Repeater" http://www.bhi.co.uk/hj/HJ-0404-133-138.pdf). AMPLITUDE. The frequency that the pendulum or balance makes. ANTI-MAGNETIC. A metal object that has either been demagnetised or a metal that does not exhibit a natural tendancy to be affected by magnetic fields. ARBOR. In watch terms an arbor is an axle used for any gear wheel or winding wheel. ATTACHMENT. The lugs of a watch case that attach to a watch band (United States Patent 4847820 AUTOMATON WATCH. Watches that at certain time points, for example when strinking hours, have animated figures that move in time with the chime of the watch. Top AUTOMATIC OR SELF-WINDING WATCH. A watch where the mainspring is wound by the action of the movement of the watch when the wearer moves during normal daily activities. AUXILIARY COMPENSATION. John Sweetman Eiffe first proposed to correct "middle temperature error" by way of an auxiliary compensation device. (Ref: The Marine Chronometer by Rupert Gould pages 181 - 183). Middle temperature error refers to a watch tending to operate faster when it is corrected for errors at extreme temperatures. BALANCE WHEEL. The wheel in a watch that swings back and forward in a regular beat, allowing the watch to maintain a constant time. In a watch the balance wheel is the equivalent to a clocks pendulum. BALANCE SPRING. The balance spring controls the regularity of the balance wheel, expanding and contracting to allow the regular spinning motion of the balance wheel to be controlled. Balance springs are protected from the problems associated with changes in temperature by the use of bi-metallic strips. BALANCE STAFF. The balance staff is the center spindle or axle of the balance wheel. BANKING PIN. Any pin in a movement that limits the movement of a lever to prevent damage. Top BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
'ALL-OR-NOTHING' PIECE. This is used in better quality repeating watches and ensures that the hour striking mechanism is only struck when a push-piece is pushed fully home. (Ref: Richard French, "Servicing a Quarter Repeater" http://www.bhi.co.uk/hj/HJ-0404-133-138.pdf). AMPLITUDE. The frequency that the pendulum or balance makes. ANTI-MAGNETIC. A metal object that has either been demagnetised or a metal that does not exhibit a natural tendancy to be affected by magnetic fields. ARBOR. In watch terms an arbor is an axle used for any gear wheel or winding wheel. ATTACHMENT. The lugs of a watch case that attach to a watch band (United States Patent 4847820 AUTOMATON WATCH. Watches that at certain time points, for example when strinking hours, have animated figures that move in time with the chime of the watch. Top AUTOMATIC OR SELF-WINDING WATCH. A watch where the mainspring is wound by the action of the movement of the watch when the wearer moves during normal daily activities. AUXILIARY COMPENSATION. John Sweetman Eiffe first proposed to correct "middle temperature error" by way of an auxiliary compensation device. (Ref: The Marine Chronometer by Rupert Gould pages 181 - 183). Middle temperature error refers to a watch tending to operate faster when it is corrected for errors at extreme temperatures. BALANCE WHEEL. The wheel in a watch that swings back and forward in a regular beat, allowing the watch to maintain a constant time. In a watch the balance wheel is the equivalent to a clocks pendulum. BALANCE SPRING. The balance spring controls the regularity of the balance wheel, expanding and contracting to allow the regular spinning motion of the balance wheel to be controlled. Balance springs are protected from the problems associated with changes in temperature by the use of bi-metallic strips. BALANCE STAFF. The balance staff is the center spindle or axle of the balance wheel. BANKING PIN. Any pin in a movement that limits the movement of a lever to prevent damage. Top BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
AMPLITUDE. The frequency that the pendulum or balance makes. ANTI-MAGNETIC. A metal object that has either been demagnetised or a metal that does not exhibit a natural tendancy to be affected by magnetic fields. ARBOR. In watch terms an arbor is an axle used for any gear wheel or winding wheel. ATTACHMENT. The lugs of a watch case that attach to a watch band (United States Patent 4847820 AUTOMATON WATCH. Watches that at certain time points, for example when strinking hours, have animated figures that move in time with the chime of the watch. Top AUTOMATIC OR SELF-WINDING WATCH. A watch where the mainspring is wound by the action of the movement of the watch when the wearer moves during normal daily activities. AUXILIARY COMPENSATION. John Sweetman Eiffe first proposed to correct "middle temperature error" by way of an auxiliary compensation device. (Ref: The Marine Chronometer by Rupert Gould pages 181 - 183). Middle temperature error refers to a watch tending to operate faster when it is corrected for errors at extreme temperatures. BALANCE WHEEL. The wheel in a watch that swings back and forward in a regular beat, allowing the watch to maintain a constant time. In a watch the balance wheel is the equivalent to a clocks pendulum. BALANCE SPRING. The balance spring controls the regularity of the balance wheel, expanding and contracting to allow the regular spinning motion of the balance wheel to be controlled. Balance springs are protected from the problems associated with changes in temperature by the use of bi-metallic strips. BALANCE STAFF. The balance staff is the center spindle or axle of the balance wheel. BANKING PIN. Any pin in a movement that limits the movement of a lever to prevent damage. Top BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
ANTI-MAGNETIC. A metal object that has either been demagnetised or a metal that does not exhibit a natural tendancy to be affected by magnetic fields. ARBOR. In watch terms an arbor is an axle used for any gear wheel or winding wheel. ATTACHMENT. The lugs of a watch case that attach to a watch band (United States Patent 4847820 AUTOMATON WATCH. Watches that at certain time points, for example when strinking hours, have animated figures that move in time with the chime of the watch. Top AUTOMATIC OR SELF-WINDING WATCH. A watch where the mainspring is wound by the action of the movement of the watch when the wearer moves during normal daily activities. AUXILIARY COMPENSATION. John Sweetman Eiffe first proposed to correct "middle temperature error" by way of an auxiliary compensation device. (Ref: The Marine Chronometer by Rupert Gould pages 181 - 183). Middle temperature error refers to a watch tending to operate faster when it is corrected for errors at extreme temperatures. BALANCE WHEEL. The wheel in a watch that swings back and forward in a regular beat, allowing the watch to maintain a constant time. In a watch the balance wheel is the equivalent to a clocks pendulum. BALANCE SPRING. The balance spring controls the regularity of the balance wheel, expanding and contracting to allow the regular spinning motion of the balance wheel to be controlled. Balance springs are protected from the problems associated with changes in temperature by the use of bi-metallic strips. BALANCE STAFF. The balance staff is the center spindle or axle of the balance wheel. BANKING PIN. Any pin in a movement that limits the movement of a lever to prevent damage. Top BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
ARBOR. In watch terms an arbor is an axle used for any gear wheel or winding wheel. ATTACHMENT. The lugs of a watch case that attach to a watch band (United States Patent 4847820 AUTOMATON WATCH. Watches that at certain time points, for example when strinking hours, have animated figures that move in time with the chime of the watch. Top AUTOMATIC OR SELF-WINDING WATCH. A watch where the mainspring is wound by the action of the movement of the watch when the wearer moves during normal daily activities. AUXILIARY COMPENSATION. John Sweetman Eiffe first proposed to correct "middle temperature error" by way of an auxiliary compensation device. (Ref: The Marine Chronometer by Rupert Gould pages 181 - 183). Middle temperature error refers to a watch tending to operate faster when it is corrected for errors at extreme temperatures. BALANCE WHEEL. The wheel in a watch that swings back and forward in a regular beat, allowing the watch to maintain a constant time. In a watch the balance wheel is the equivalent to a clocks pendulum. BALANCE SPRING. The balance spring controls the regularity of the balance wheel, expanding and contracting to allow the regular spinning motion of the balance wheel to be controlled. Balance springs are protected from the problems associated with changes in temperature by the use of bi-metallic strips. BALANCE STAFF. The balance staff is the center spindle or axle of the balance wheel. BANKING PIN. Any pin in a movement that limits the movement of a lever to prevent damage. Top BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
ATTACHMENT. The lugs of a watch case that attach to a watch band (United States Patent 4847820 AUTOMATON WATCH. Watches that at certain time points, for example when strinking hours, have animated figures that move in time with the chime of the watch. Top AUTOMATIC OR SELF-WINDING WATCH. A watch where the mainspring is wound by the action of the movement of the watch when the wearer moves during normal daily activities. AUXILIARY COMPENSATION. John Sweetman Eiffe first proposed to correct "middle temperature error" by way of an auxiliary compensation device. (Ref: The Marine Chronometer by Rupert Gould pages 181 - 183). Middle temperature error refers to a watch tending to operate faster when it is corrected for errors at extreme temperatures. BALANCE WHEEL. The wheel in a watch that swings back and forward in a regular beat, allowing the watch to maintain a constant time. In a watch the balance wheel is the equivalent to a clocks pendulum. BALANCE SPRING. The balance spring controls the regularity of the balance wheel, expanding and contracting to allow the regular spinning motion of the balance wheel to be controlled. Balance springs are protected from the problems associated with changes in temperature by the use of bi-metallic strips. BALANCE STAFF. The balance staff is the center spindle or axle of the balance wheel. BANKING PIN. Any pin in a movement that limits the movement of a lever to prevent damage. Top BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
AUTOMATON WATCH. Watches that at certain time points, for example when strinking hours, have animated figures that move in time with the chime of the watch. Top AUTOMATIC OR SELF-WINDING WATCH. A watch where the mainspring is wound by the action of the movement of the watch when the wearer moves during normal daily activities. AUXILIARY COMPENSATION. John Sweetman Eiffe first proposed to correct "middle temperature error" by way of an auxiliary compensation device. (Ref: The Marine Chronometer by Rupert Gould pages 181 - 183). Middle temperature error refers to a watch tending to operate faster when it is corrected for errors at extreme temperatures. BALANCE WHEEL. The wheel in a watch that swings back and forward in a regular beat, allowing the watch to maintain a constant time. In a watch the balance wheel is the equivalent to a clocks pendulum. BALANCE SPRING. The balance spring controls the regularity of the balance wheel, expanding and contracting to allow the regular spinning motion of the balance wheel to be controlled. Balance springs are protected from the problems associated with changes in temperature by the use of bi-metallic strips. BALANCE STAFF. The balance staff is the center spindle or axle of the balance wheel. BANKING PIN. Any pin in a movement that limits the movement of a lever to prevent damage. Top BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
Top
AUTOMATIC OR SELF-WINDING WATCH. A watch where the mainspring is wound by the action of the movement of the watch when the wearer moves during normal daily activities. AUXILIARY COMPENSATION. John Sweetman Eiffe first proposed to correct "middle temperature error" by way of an auxiliary compensation device. (Ref: The Marine Chronometer by Rupert Gould pages 181 - 183). Middle temperature error refers to a watch tending to operate faster when it is corrected for errors at extreme temperatures. BALANCE WHEEL. The wheel in a watch that swings back and forward in a regular beat, allowing the watch to maintain a constant time. In a watch the balance wheel is the equivalent to a clocks pendulum. BALANCE SPRING. The balance spring controls the regularity of the balance wheel, expanding and contracting to allow the regular spinning motion of the balance wheel to be controlled. Balance springs are protected from the problems associated with changes in temperature by the use of bi-metallic strips. BALANCE STAFF. The balance staff is the center spindle or axle of the balance wheel. BANKING PIN. Any pin in a movement that limits the movement of a lever to prevent damage. Top BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
AUXILIARY COMPENSATION. John Sweetman Eiffe first proposed to correct "middle temperature error" by way of an auxiliary compensation device. (Ref: The Marine Chronometer by Rupert Gould pages 181 - 183). Middle temperature error refers to a watch tending to operate faster when it is corrected for errors at extreme temperatures. BALANCE WHEEL. The wheel in a watch that swings back and forward in a regular beat, allowing the watch to maintain a constant time. In a watch the balance wheel is the equivalent to a clocks pendulum. BALANCE SPRING. The balance spring controls the regularity of the balance wheel, expanding and contracting to allow the regular spinning motion of the balance wheel to be controlled. Balance springs are protected from the problems associated with changes in temperature by the use of bi-metallic strips. BALANCE STAFF. The balance staff is the center spindle or axle of the balance wheel. BANKING PIN. Any pin in a movement that limits the movement of a lever to prevent damage. Top BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
BALANCE WHEEL. The wheel in a watch that swings back and forward in a regular beat, allowing the watch to maintain a constant time. In a watch the balance wheel is the equivalent to a clocks pendulum. BALANCE SPRING. The balance spring controls the regularity of the balance wheel, expanding and contracting to allow the regular spinning motion of the balance wheel to be controlled. Balance springs are protected from the problems associated with changes in temperature by the use of bi-metallic strips. BALANCE STAFF. The balance staff is the center spindle or axle of the balance wheel. BANKING PIN. Any pin in a movement that limits the movement of a lever to prevent damage. Top BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
BALANCE SPRING. The balance spring controls the regularity of the balance wheel, expanding and contracting to allow the regular spinning motion of the balance wheel to be controlled. Balance springs are protected from the problems associated with changes in temperature by the use of bi-metallic strips. BALANCE STAFF. The balance staff is the center spindle or axle of the balance wheel. BANKING PIN. Any pin in a movement that limits the movement of a lever to prevent damage. Top BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
BALANCE STAFF. The balance staff is the center spindle or axle of the balance wheel. BANKING PIN. Any pin in a movement that limits the movement of a lever to prevent damage. Top BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
BANKING PIN. Any pin in a movement that limits the movement of a lever to prevent damage. Top BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
BARREL (GOING). The barrel contains the mainspring which when wound gives its energy out to the drive train, controlled by a toothed section on the exterior. BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
BEAT. A description of the ticking sound made by the movement. BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
BEZEL. The exterior part on the face of a watch surrounding the face and holding the crystal in place. BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
BIMETALLIC. Commonly known as a Bi-Metalic strip, invented by John Harrison, it composes of two different materials sandwiched together, each strip having a different co-efficiency of expansion which has the effect of countering any expansion or contraction due to changes in temperature. BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
BOW. Usualy in Pocket Watches, the bow is used to attach a chain to the watch. Usually over the crown. BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
BRIDGE. An additional part fixed to the main plate, forming the frame of the watch. BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
BULL'S EYE GLASS. a glass lens with a round flat smooth surface machined in the center. Top Pocket Watch Parts Top
Pocket Watch Parts Top
