Geometrical drawing; a collection of plates for practical use in elementary mechanical drawing (1915)
Schraidt, Ferdinand Friederich Hans, 1880- · San Francisco, Whitaker and Ray-Wiggin co. · leaf 49
7b drcft^ a perpencficu/ar fo agt¥en//nt from a point P To dfiftde er y/t^ert //r?e tftfo^ any nt/mber ofe^ua/ parts . … To bisect a ff/yen arry/a >J a c/r/e t/irOi/oty 3 Qfirtn po/rtts, H —2^ A/ofe : Profide atf printing as shown abore^ buf omit d/mens/ons. PLATE EZl 19
Mechanical drawing · Geometrical drawing
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