Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 339
straps. Theform of the joint is shown at 3, which is a vertical transverse Fig. 317. … Compact Telescope—2>^ inch Aperture, 24 inch Focus. section. A strong bolt, o, forms the pivot of the jointbetween the socket, O, and trough, P, and is provided with THE TELESCOPE. 317 a wing nut by which it mav be tightened. The surfaces ofthe joint as well as the upper end of the standard…
Physics · Lantern projection · Electric apparatus and appliances
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