Sawduster

I recently picked up an old steel ruler that turned out to be unusual. On the front is the conventional 36 inch scale on one edge and on the other edge is a circumference conversion scale. On the back is a lot of information some of which seems to be a guide for making containers of various capacities. I believe it belonged to an old sheet metal worker. I wonder how old it is.

Handyman

Sawduster You really don't need that ruler. Just put in a box and send it to me. LOL Great find by the way.

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njtinman

that is a tinners rule that one is made by pexto a sheet metal mach co. maybe 30 years or better. still can buy them they are expensive new and dont have the stuff on the back and most likely not by pexto. ive only seen malco and lufkin