Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 704
n-drel, and then unscrewing one from the other. The handlewill of course be formed by aid of pliers. No. 9 is still another form of pinch cock. It is providedwith two thumb pieces, which are pressed when it is desiredto open the jaws. No. 10 is a tripod stand, formed by twisting three… … Wire Apparatus for Laboratorj- Use. 682 EXPERIMENTAL SCIENCE. No. II shows a stand adjustable as to height for support-ing the beak of a retort, or for holding glass conducting orcondensing tubes in an inclined position. The retort or filter stand, represented at 12, is shownclearh enough to…
Physics · Lantern projection · Electric apparatus and appliances
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