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 99
ere is no dip, that is, the needle will standparallel with the Earths surface. At the north pole the needle will stand straight up and downin a line with the axis of the Earth. The dip, therefore, of the KNITTING NEEDLE \ SEWING NEEDLE Fig. 91.—Needle for Dipping Needle. needle at any place on the… … Fig. 92.—Dipping Needle Complete. needle and push a sewing needle through the cork at right anglesto the knitting needle, as shown in Fig. 91. Now lay the sew-ing needle with its ends on the edges of two tumblers, and seethat the knitting needle is perfectly balanced. This done, mag-
Astronomy · Stars
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