American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 119
nd, is the anvil; the fileblank is held on the anvil by means of aleather strap passing over each end of it, andthen under the feet of the workman, likestirrups ; the hammers weigh from one to sixpounds according to the size of the file, andare curiously formed, the handle being so placed as to… … file, and are only just long enough to be heldbetween the thumb and the forefinger of theleft hand. At every blow of the hammer thechisel is made to cut a tooth, and the blowsfollow one another in such rapid successionthat the movement forward of the chisel be-tween each blow is not perceived. When…
Clocks and watches
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