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The Sheet metal worker's instructor : for zinc, sheet iron, copper, and tin plate workers, and others, containing a selection of geometrical problems, also practical and simple rules for describing the various patterns required in the different branches of the above trades (1906)

Warn, Reuben Henry · Philadelphia : Henry Carey Baird & Co. · leaf 62

An illustration from The Sheet metal worker's instructor : for zinc, sheet iron, copper, and tin plate workers, and others, containing a selection of geometrical problems, also practical and simple rules for describing the various patterns required in the different branches of the above trades, 1906, leaf 62

Sheet-metal work

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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