What to do and how to do it; the American boys handy book (1920)
Beard, Daniel Carter, 1850-1941 · New York, C. Scribner's sons · leaf 281
anner: if from where the top of the glass rests againstthe end board, it measures nine inches to the bottom of thtbox, then the bottom of the glass should be nine inches fron;the end of the box. Grind the surface of one side of the window-pane glass byrubbing it upon a flat stone or sand-paper.… … Camera for Drawing. Every Boy a Decorative Artist 253 turned toward any object, that object will be immediately re-flected upon the piece of ground glass. No great difficultyneed be anticipated by any one in the adjustment of the partsof a camera obscura, as it can be easily arrived at by trial. If…
Amusements · Sports
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
