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 . will makeit hard to figure out. A kind of sundial that will give the correct Sun time though,can be easily made and at little cost. Get a strip of tin 2inches wide and 24 inches long; mark it off into 24 equal spaceslike those on a two-foot rule, and beginning at one end with the THE SUN, BRIGHTEST OF ALL STARS 43 number 1, number each space to 24, as shown in Fig. 45. Thisdone, bend the strip of tin into a perfect ring with the numbersinside and solder the
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 . will makeit hard to figure out. A kind of sundial that will give the correct Sun time though,can be easily made and at little cost. Get a strip of tin 2inches wide and 24 inches long; mark it off into 24 equal spaceslike those on a two-foot rule, and beginning at one end with the THE SUN, BRIGHTEST OF ALL STARS 43 number 1, number each space to 24, as shown in Fig. 45. Thisdone, bend the strip of tin into a perfect ring with the numbersinside and solder the joint, as shown in Fig. 46. Next get 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. 47 and solder thetin ring, at the point where numbers 1 and 24 meet, to themiddle of the brass semi-circle. Through the holes in the endsof the brass semi-circle fasten a wire, and this wire must run. 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 level the wire should point directlyto the North Star and when this is done it will be adjusted to
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Keywords: ., bookcentury1900, bookdeca, booksubjectastronomy, booksubjectstars
