Alternatively, a long bristle could lay across the balance. After 1675, the mechanism was set between the plates. - Also called pique. Isolated on white background. x represents the displacement of the end of the spring from its position of equilibrium. - A watch made with a front cover to protect the crystal. TAMBOUR CASE. - The term "adjusted" simply means that the watch has been calibrated and keeps time under various conditions. OIL SINK. Also called a set-hand button. The other wheel has ten teeth and is fixed directly to the barrel. - A fan with two blades that acts as a braking system to regulate the speed of repeating or striking. Sometimes a jewel can be found in the cylinder shell of a cylinder escapement. It is written as F=-kx. The watch movement swings out from the front of the case when the bezel is opened. These watches were popular in the last part of the 1600s, and there were also a few made in the late 1800s. Color your pocket watch. Commonly used in high grade watches, pocket chronometers and marine chronometers. Recoil escapements cause a recoil of the escape wheel through the use of eccentric locking faces. REPUBLICAN CALENDAR. The keyless mechanism was perfected at the end of the 1800s. When the watch is wound, the pinion touches the uncut portion of the snail wheel, which is the stop position. - First used by John Harrison, the compensation curb is a bar made of brass and steel. - Centrally located in the movement, this pinion is driven by the great wheel. The bold numbering on this tattoo really makes it pop. The bristle would be flexed by two pins on the rim of the balance. - The pinions and wheels that connect the fusee or going barrel to the escapement. A unit of measurement indicating the size of a movement used in Swiss and French units. BARREL (RESTING). Click HERE to save the tutorial to Pinterest! A pin carried by the warning wheel in the striking train is stopped then released by the warning piece. TRIPLE-CASED. Classified as a frictional rest, single-beat escapement. Horologists … HOUR RACK. I'm Rauno from Vancouver, Canada. - A glass lens with a round flat smooth surface machined in the center. A safety device used in the lever escapement. GATHERING PALLET. A simple design that anyone can treasure. - A repeating watch in which the hammers that strike the hours and quarters hit the case or a block inside the case instead of a bell or gong. The only hand makes a revolution once every six hours. - This calendar was introduced in France in 1792. Draw a long, narrow diamond at the end of each line, and shade it. - This type of hour hand jumps forward at the hour, rather than moving slowly towards the next numeral. - Also known as a balance spring. Not the same as a repeating watch. Gold is colored by adding alloys to produce yellow, green, red or silver hues. - The plate furthest from the dial. Slightly similar to a tambour case, without a hinge. See detent escapement. - The last coil found in a Breguet balance spring. Watches made in different countries may sport different shapes in their balance cocks. It is geared to a small wheel that is attached to an index dial and a key square. This design is now referred to as Breguet hands. See balance spring. - Derived from the Debaufre escapement. There is a double set of locking teeth to control the movement. KEYLESS WATCH. English watches using lever escapements are do not have divided lift. A. Lepine, this movement features a design in which the top plate has been replaced by bridges or bars. - A mark made using punches on gold or silver to identify the maker, quality of metal, the mark of the Hall and the standard mark.
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