Playtner, H. R. [from old catalog] · Chicago, Hazlitt & Walker · leaf 43
Fig. 24. Fig. 25. The Crescent in the roller must be large and deepenough so it will be impossible for the guard point totouch in or on the corners of it; at the same time it mustnot be too large, as it would necessitate a longer horn onthe fork than is necessary. Fig. 24 shows the slot n of the…
Clocks and watches
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