tely true. Note that the short lines are made heavier. At C is a form, usefulwhere the space will not permit the intermediate lines. 99. In the Vee R. H. Single screw, the thread makes eight complete turns or wraps about the cylinderin one inch. It is therefore called a No. 8 thread or an 8 Pitch… … Fig. n. J, or the distance between centers of two adjacent Vees. In the Sq. L. H. Sing, screw, is shown a thread inwhich the hnear pitch is j. There are four wraps in one inch and it s called a 4 Pitch thread. 100. In the Square Double screw, two distinct threads are wound on the cylinder, as…
Mechanical drawing · Lettering
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