Proto Era Tool Displays - Proto Rotamat

This particular design was patented by Edgar Howard and assigned to Plomb Tool Co. in 1952 under patent #D168095.

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The Proto Rotamat. This picture is from the July, 1951 Issue of Hardware Age.

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July, 1951 Issue of Hardware Age advertisement - Exploded View 1

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July, 1951 Issue of Hardware Age advertisement - Exploded View 2

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Proto Rotamat Example.

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