Canadian Jewellers Association · Toronto : Maclean-Hunter Pub. Co · leaf 460
other is free, See Fig. 2. If the balance were made of one1] each in< rcase of heat would cause the arms as well as the rim to become larger and the watch would go slower. Eachrease of temperature would cause tin m to < ontrai I and make the wat< h gain. In a compen ited balance they, also… … Fig. 3.
Jewelry · Jewelry trade
Internet Archive · Thomas Fisher Rare Book Library · Public Domain Mark 1.0. Free to use for anything.
