Canadian Jewellers Association · Toronto : Maclean-Hunter Pub. Co · leaf 406
on of thetooth against the finger is greater, commencing further from theline of centres, and in a direction more oblique, ard the wearof both finger and tooth is increased. However, as far assafety is concerned, if the motive force is weak or the vibrationsof the balance are quicker than usual, i… … A tig. *a. of the motive force increases, urging the tooth forward morequickly, the finger must have a greater start in advance of thetooth in order to attain a safe depthing in the impulse circle rv,before the tooth reaches it. The maximum and standard dropmay be considered as 10 , and the minimum…
Jewelry · Jewelry trade
Internet Archive · Thomas Fisher Rare Book Library · Public Domain Mark 1.0. Free to use for anything.
