American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 87
saction may not be so satisfactory, one work-man saying that an angle of 45° cuts beauti-fully, and another, equally skilful, assertingthat he succeeds best with his eutters at 75°,both being right for the particular tool andmaterial spoken of. Experience seems to bethe best teacher. Holtzappfel… … Figures 1 and 2 represent right and lefthand tools. Fig. 3, flat tool. Fig. 4, point tool, of which the commongraver is a representative. Fig. 5, parting tool showing breadth andthickness. Fig. 6, round tool. These tools, with angles adapted to thepurpose tor which they are designed to beused, are…
Clocks and watches
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