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 160
the holes is a matter of much importance, for if they are not at right angles to the surface, the footstool will not be square. One of the upper holes should be bored to a depth of about 1 %inches and the other onebored until it meets thisone. A better plan isto bore but one hole atthe top of each… … 158 WOODWORK FOR THE GRADES
Woodwork
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.