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Mechanical drawing self-taught: comprising instructions in the selection and preparation of drawing instruments, elementary instruction in practical mechanical drawing together with examples in simple geometry and elementary mechanism, including screw threads, gear wheels, mechanical motions, engines and boilers (1883)

Rose, Joshua · Philadelphia, H.C. Baird & Co.; London, S. Low, Marston, Searle & Rivington · leaf 121

An illustration from Mechanical drawing self-taught: comprising instructions in the selection and preparation of drawing instruments, elementary instruction in practical mechanical drawing together with examples in simple geometry and elementary mechanism, including screw threads, gear wheels, mechanical motions, engines and boilers, 1883, leaf 121
he chamferA meets the side of the head at B, and does not,therefore, meet the arc C. The length of side lyingbetween B and D in the side view corresponds withthe part lying between E and F in the end vieAv. 20 MECHANICAL DRAWING SELF-TAUGHT. If we compare fthis head with similar views of asquare… … the same distance between the chamfer circle and theside of the holt (that is, the distance from J to K,beinii^ equal to that from L to M), the length of thecliamfcr N for the square head so greatly exceeds theK-ngth A for th(^ hexagon head that the eye detects EXAMPLES IN BOLTS, NUTS,- AND…

Mechanical drawing

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