Machine drawing; a text and problem book for technical students and draftsmen (1921)
Svensen, Carl L. (Carl Lars), 1884- · New York, D. Van Nostrand company · leaf 31
Fig. 41. Square Bolt Head and Nut.38. To draw a square bolt head or nut across corners refer to Fig. 41. … Fig. 42. Rounded Type. FASTENINGS FOR MACHINERY 21
Machinery
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