Woodwork for secondary schools; a text-book for high schools and colleges, prevocational and elementary industrial schools (1916)
Griffith, Ira Samuel, 1874-1924 · Peoria, Ill., Manual Arts Press · leaf 58
d with small drills and has a ratioof three to one. A level is attached to the frame to assist the workerin maintaining a horizontal position while boring. Thespindle is kept from turning while changing drills bymeans of a latch mounted on the frame. Different sweepsof the crank are obtained by… … Hollow HAMDLlCit^NK H^NDLE
Woodwork (Manual training)
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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