Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 368
ANEROID BAROMETERS—Continued For Measuring Heights and Atmospheric Pressure … 42404240. Pocket size, gilt case, 2^ inches diameter, silvered-metal dial,compensated for temperature revolving altitude 5,000 in 20 divisions, in roan leather octagonal case each, $21.35 4240A. Same as No. 4240 with altitude scale 8,000 in 50 divisions, each, 20.504240B. Same as No. 4240; altitude…
Engineering instruments · Drawing instruments
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