American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 184
any size,from the smallest scape wheel up to the lar-gest barrel or main wheel. There accompanythe tool, five different arbors, with tendifferent centres, two of which are conical •the others are hollow, with a transverse holeto enable the workman to not only clean thecentre, but to oil the pivot… … segment cut out of the periphery, as shown inthe cut; being placed on the live arbor, thesaw is held in its place by a follower or washer,on which is a steel plate; this plate is cut awaya slight distance from the edge, on two sidesof a narrow neck, which is left by the under-cut, as is shown in…
Clocks and watches
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