Bench work in wood: a course of study and practice designed for the use of schools and colleges (1902)
Goss, W. F. M. (William Freeman Myrick), 1859-1928 · Boston, Ginn & company · leaf 30
i6 BENCH WORK IN WOOD. delicate by use of the thumb-nut C, which, acting in opposi-tion to the spring Z>, shortens the arc B or allows the spring tclengthen it, as may be required. Fig. 36
Woodwork (Manual training)
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