Title:  20th Century Tools   (14kb)
Author:  H Holford

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Author:  Clifford A. Butterworth

Title:  A Bending Jig for Sheet Metal    (39.3kb)
Author:  L. A. Watson

Title:  Grinding on the Bench Drill    (55kb)
Author:  Geometer

Title:  A Miniature Tube Bender    (232kb)
Author:  C. Horace Clarke

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Author:  Geometer

Title:  Web-Trammels    (74.1kb)
Author:  ?

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