Woodwork for the grades, for use in manual training classes; fully illustrated with three hundred half-tone engravings from actual shop practice, and many working drawings of educational shop problems (1913)
Selden, Frank Henry · Chicago, Orr & Lockett Hardware Co · leaf 110
;. ordinary mechan- ^^^gg^^, ic, though you may I li not work as rap- [ I! First examine /W^TllEp^y ^HJ^^m the bit and learn iS^-^*^ ^wf the purpose of Fig. 137—Bit-brace each part. The square upper end, or tange, fits into the bit brace, and theround part or shank, gives length so that deep holes… … 108 WOODWORK FOR THE GRADES
Woodwork
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