A practical work-shop companion for tin, sheet-iron, and copper-plate workers ... with numerous valuable receipts and manipulations for every-day use in the work-shop (1904)
Blinn, Leroy J. [from old catalog] · Philadelphia, H. C. Baird & co. · leaf 123
le.—Divide the whole or anygiven portion of the circum-ference into the desired number of equal parts ; then, withany radius less than the distance of two divisions, describearcs cutting each other, as Ai, Bi, C2, D2, etc. (Fig. 128);draw the lines Ci, B2, D3, etc., which lead to the centreas… … PitACTICAL GEOMETRY. 101 To describe an arc or segment of a circle of large radii.-—Of any suitable material, construct a triangle, as ABC(Fig. 129); make AB, BC, each equal in length to thechord of the arc DE, and in height twice that of the arc
Metal-work
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
