Making Woodwork Aids & Devices, by Robert Wearing

This is a bare bones book:  no narrative, just a catalog of jigs for different woodworking situations.   Some of them seem low on aesthetics, some seem unnecessary (a jig for photographic slides -- anyone remember what they were?).   I flat out couldn't understand the tools for drawing perspectives.

In spite of this, the book seems well worth having as a reference.   What if you need to cut a disc (item 170) or put a groove in a dowel (item 121) or precisely gauge a cylinder (item 66)?