Rack Lever
A watch escapement, said to have been invented by Abbe Hautefeuille in 1734. The lever terminated in a rack, which worked into a pinion on the balance staff.
RAMSAY, DAVID. Clockmaker to James I, and the first master of the Clockmakers'
How to true a balance, repair a chipped dial, temper a spring or test a stone — the working bench-book of the American watch trade, arranged A to Z.
A watch escapement, said to have been invented by Abbe Hautefeuille in 1734. The lever terminated in a rack, which worked into a pinion on the balance staff.
RAMSAY, DAVID. Clockmaker to James I, and the first master of the Clockmakers'