Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 154
1218. Suspended Pantograph of square wooden bars, 28 inches long, in wooden case each, $ 38.00 1220. Suspended Pantograph of square metal tubes, 33 inches long,divided into millimeters, enlarging or reducing all proportionsfrom 1-20 to 1-5, in wooden case each, 125.00 … 1222. Suspended Pantograph of square metal tubes, 371 inches long,divided into millimeters, with verniers reading to 1-10 milli-meter, and with micrometer to adjust the wanted proportion,enlarging or reducing in all proportions from 1-20 to 1-1. Alljoints are pivot joints, and the standard is…
Engineering instruments · Drawing instruments
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