The book of stars; being a simple explanation of the stars and their uses to boy life, written to conform to the tests of the Boy scouts (1915)
Collins, A. Frederick (Archie Frederick), 1869- · New York, D. Appleton and company · leaf 62
et a strip of iron or brass % mcn wide, yi6 inchthick and 13 inches long; drill a 1/16 inch hole through each I IT W BT YU WW. K XXI HI 211XIX XX HI MMMIX2K zv Fig. 45.—Numbered Strip for Sundial. end and a %-inch hole 4 inches from one end; bend this stripinto an exact semi-circle, as shown in… … Fig. 46.—Tin Ring for Sundial. exactly through the center of the tin ring. Now screw thebrass semi-circle to a baseboard (see Fig. 48), so that theangle made by the wire and the surface of the board will beequal to the latitude of the place where it is to be used; in otherwords, when the board is…
Astronomy · Stars
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
