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 183
un-ning to various jewelry and other stores and these subscribersget the correct time direct by telegraph from the Naval Ob- 1164 THE BOOK OF THE STARS servatory for their sounders are connected in the regular linecircuit. The Time Ball.—The Bureau of Navigation got up what isknown as the time ball… … Fig. 168.—The Time Ball. having a diameter of over 3 feet and with a hole in its center, isslipped over a pole or flagstaff some 20 feet in height, which ismounted atop of some high building where it can be seen to thebest advantage. The ball is held in position at the top of the pole by an THE…
Astronomy · Stars
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