An Analysis of the Lever Escapement

A complete study of the lever, cylinder and chronometer escapements in theory and practice. Compiled from the Keystone serials with nearly two hundred original illustrations, including a brief account of the origin and evolution of the escapement in horology.

The Keystone

Grossmann's prize-winning treatise on the detached lever escapement, with detailed diagrams of rack levers, Mudge's fork, and modern lever forms. Covers the action of pallets and rollers, banking, draw, and the geometry of escapement adjustment.

Moritz Grossmann

Wilkinson teaches the watch repairer how to read, test and correct the lever escapement. Each lesson covers a specific error, from the draw and impulse angles to the safety roller, with workshop tests for detecting and curing it.

T. J. Wilkinson