Massey patent lever escapement pocket watch mechanism

Massey's patent modified lever escapement with large balance

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Massey's patent modified lever escapement with large balance
Science Museum Group
© The Board of Trustees of the Science Museum

Massey's patent modified lever escapement with large balance wheel beating seconds, centre-seconds, no. 11197, by Litherland, Davies and Co., Liverpool, England, 1795-1805.

Details

Category:
Time Measurement
Object Number:
1920-557
Materials:
brass (copper, zinc alloy) and steel (metal)
Measurements:
overall: 13 mm 52 mm, .055 kg
type:
spring-driven watch mechanism and deadbeat anchor escapement
credit:
On loan from Bruno Roberts