Recent developments in drawing by the aid of projection apparatus used on the house lighting system .. (1912)
Gage, Simon Henry, 1851-1944 · n.p. · leaf 31
Fig. U … DRAWING WITH PROJECTION APPARATUS I9S Plate XXIII Fig. 12. Edingers drawing microscope with cloth tent. Made by E. Leitz,Wetzlar. The lamp condenser is small, and composed of a single doubleconvex lens at the end of a telescoping tube. If the tube is in,the beam is nearly parallel, if pulled out…
Lantern projection · Projection · Drawing
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