
Antikythera Mechanism
Evidence of a Lunar Calendar, parts 1 and 2
C. Budiselic, A. T. Thoeni, M. Dubno, A. T. Ramsey
Published: 5 December, 2020
Image used with permission, copyright 2019, David Jones

Fred Lip – Electronic Watch
Coverage in the Horological Journal of Fred Lip’s electric watch balance patent specification (HJ, January 1953, p40) and lecture to members of the BHI (HJ, July 1953, pp428–431).
Resource provided in reference to ‘Auction Room’ (HJ, July 2021, pp308–311).

Mainspring Winder Sizes
Mainspring data now available. The mainspring winder is a crucial tool for the watchmaker, yet it’s typically unobtainable at the sort of price that beginner watchmakers might want to spend. How do the new Chinese mainspring winders compare with the Swiss sets by Bergeon, and which of the Bergeon ones offer the best combination of useful sizes?

A Turret Clock by William Bennett
The Hon. G. W. Bennet describes a clock dated 1672 with an anchor escapement (HJ, June 1956, pp349, 372–374, 391). Resource provided in reference to ‘Auction Room’ (HJ, September 2021, pp406–409).