This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
and saves time in adjusting. When complete and on the wrist, it will appear as in Fig. 2. - Contributed by J. H. Harris, Berkeley, Cal.
 
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