he aim of the present article to present hundredths of a second and an average difference of inch to three-fourths inch in width. These strips are only forty-four one-hundredths of a second between such a selection of views and as much descriptive then fed by an attendant to a punching machine, the… … bearings in the better grades of movements consisting of jewels set in the plates, and with holes of such exact- ness that the clearance between the pivots and the jewels is only one one-thousandth of an inch. the machine-made watch, we have chosen the Waltham Blank punchings for the pillar and top…
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