Fry, Horace Pugh. [from old catalog] · Philadelphia [The John C. Winston co.] · leaf 9
- article itemized in the foregoing list has a specific pur-pose and must be used accordingly. See Fig. 3 for use of triangles.) A*_^ TO OBTAIN ANGLe^,^-—*A^ - *0- OF \ 5* AND 75 -5° «^,^\ -V.XwiTH TRIANGLES^ , ^ / ^^^ … Fig. 3. Chisel points must be used on ail instrument leads and pencils. Cut the wood back for IJ exposing the lead for f, then flattenit by rubbing opposite sides on a file, then bring to a knife edge byusing a slight rocking motion. SIZE OF SHEETS. 1. All drawings required in Courses 492and 493…
Mechanical drawing
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