Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 634
^ effective. The outer or movable lens cell projects beyond thehinged plate, and receives a split ring provided with ashallow internal groove, which fits over a corresponding Fig. 583. … Microscope Attachment. circumferential rib on the lens cell. This split ring has atangent screw for drawing it together, so as to cause it toclamp the lens cell. It is also furnished with an ear, intowhich is screwed a bar parallel with the axis of the lens. Tothis bar are fitted the slide support,…
Physics · Lantern projection · Electric apparatus and appliances
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-171-134.webp)
