| 释义 |
ˈdepthing, vbl. n.
[f. assumed vb. depth = depthen + -ing1.]
In depthing or depthening-tool: a. a countersink for deepening a hole; b. a watchmaker's tool for gauging the distances of pivot-holes in movement plates.
1788Trans. Soc. Arts VI. 188 Description of the sector depthing tool [in Horology]. 1879Cassell's Techn. Educ. IV. 325/2 Supposing we place a wheel and pinion into the depthing tool, with sixty-four teeth and eight leaves respectively. 1884F. J. Britten Watch & Clockm. 81 Accuracy of construction is absolutely essential in the depthing tool. |