Suppose you have to determine the diameter of a piece of pipe or dowel, but calipers aren't to be found in your shop.

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woodworking technique shop tip

Suppose you have to determine the diameter of a piece of pipe or dowel, but calipers aren't to be found in your shop. How can you take the measurement?

Slip an adjustable wrench over the piece, tighten snugly, and then use a tape measure to determine the jaw opening.
—From the WOOD® magazine shop