o 12-11 Nos. 12-25 to 12-26 Nos. 12-27 to 12-28 12-10 COMBINATION, OUTSIDE AND INSIDE CALIPERS, polished steel. Length 4 inches $0.20 12-11 , same as above, but 6 inches long .25 For other Calipers see Index. 12-25 OUTSIDE SPRING CALIPER, extra quality polished steel machinist's caliper. Length 4… … Nos. 12-35 to 12-36 Nos. 12-40 to 12-42 12-35 SPRING GAUGE CALIPER, indispensable for the measuring of thicknesses of lenses, sufficiently accurate for ordinary laboratory measurements of sheet metal and wire. Rapid and accurate, reading directly to Vio millimeter. Measuring up to 10 millimeters…
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