Proper shellac is essential to maintain the position of the pallet stones in the fork. Poorly applied shellac can interfere with the operation of the pallet fork or fail prematurely.
Lubrication
The ideal quantities of lubrication on the escapement vary widely by manufacturer and depend on factors such as size and rate of the escapement, as well as whether or not […]
Cleanliness and Condition
All components must be perfectly clean and in good condition. No particles of dust, debris, or lint are acceptable. The parts should be inspected for damage or wear. Some items, […]
Total Lock/Run To The Banking
Total lock is the sum of drop and run to the banking. It must be equal on the entry stone and exit stone. The deign of the escapement determines how […]
Drop-Lock
Drop-lock occurs at the instant when the drop ends and the escape wheel tooth contacts the pallet stone. It is measured as the distance between the corner of the pallet […]
Case Backs
An excellent watchmaker should be able to open and close a watch back without leaving any marks. Very faint scratches may be acceptable in the bottom of a case notch […]
Applying Oil to Train Jewels
Properly Oiled Train Jewel Train jewels must be perfectly clean before any lubrication is applied. It is preferable for lubricants to be applied directly to the oil cup after installing […]
Hand Alignment and Division
Alignment: The minute hand should point directly at the 12 o’clock (60 minute) marker when the hour hand is perfectly centered on any and every hour marker. This is typically […]
Screw Condition
When watch servicing is complete, the condition of the screws in the watch should be as good as when the watch was received and, ideally, as good as when it […]
Hairsprings
When adjusting balances with the Etachron regulating system, the hairspring should be centered perfectly between the two regulating pins when the balance is at rest at the dead point. The […]
