Wristwatch Chronometers: Mechanical Precision Watches and Their Testing (Schiffer Book for Collectors)

SKU: 849408951_2

Brand: Schiffer Pub Ltd

Product Description

A Chronometer is a precision watch, which is regulated in various positions and at different temperatures and has received a certificate to that effect." This definition of a chronometer was formulated in 1951 by the Organization of Swiss Watch...