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Mainspring Gauges and the Dennison Combined Gauge

Richard Watkins

2009, 50 pages, ill

This booklet is a detailed study of watch mainspring gauges. The main aim is to describe these gauges and show that, despite being inaccurate, they are sensibly based on Metric, French imperial or English imperial measurements.

The gauges described are made by Montandon, Martin, Robert, Lepine, Ferret, Prenot and Aaron Dennison.

The book is provided as an Adobe Acrobat PDF file:

Aaron Dennison's combined standard gauge.