Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn & company · leaf 215
20 25 30 25 20 ,,. 5 zero V b 10 1 1 1 1 ♦ … Fig. 13 only fifteen spaces on each side of the zero line. When thevernier is turned to the right less than 15 past a division lineof the limb, read the lower figures on the left of the zero lineat any coincidence; if moved more than 15 past a divisionline of the limb, read the upper figures on the…
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