How to Draw.ca

Learn to how draw.


Drawing Gear Wheels

The names given to the various lines of a tooth on a gear-wheel are as follows: In Figure 233, A is the face and B the flank of a tooth, while C is the point, and D the root of the tooth; E is the height or depth, and F the breadth. P P is


Screw Threads And Spirals

Fig. 202. Fig. 203. The screw thread for small bolts is represented by thick a

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