Collins, A. Frederick (Archie Frederick), 1869- · New York, London, D. Appleton and company · leaf 99
STEEL SEWINGNEEDLE CORK Fig. 88. — Compassplete. Com- 78 THE BOOK OF THE STARS … Pig. 89.—Pocket Watch-case Compass. pole and the other end on the south pole of a steel magnet. Stick a sewing needle into a large cork and lay the magnetized needle on it, when it will point north and south, as shown in Kg. 88. Boxing the Compass.—There are two kinds of compasses in general use,…
Astronomy · Stars
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
