Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 374
. Equipped with 8-day cylinder clock and Kew Certified mercury thermometer forcomparison of reading Fahrenheit, in weatherproof metal case,copper-hinged cover and glass-paneled front and padlock, each, $50.00 4327. Hygrograph or Recording Hygrometer, scale from 0 to 100 percent, moisture by single… … ^iimmm^m^^^ 4330Howards Pattern Gauge
Engineering instruments · Drawing instruments
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
