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Use a Radio Antenna to Check Square Measurements in the Workshop
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Measuring out project with a radio antenna An old telescoping antenna can be helpful in measuring out the diagonals of your next project

To check my diagonals for square, I use an old telescoping radio antenna with the ends fashioned into points to fit into corners better. I extend the antenna one way, then carefully lift it out and see if it fits the space between the other pair of diagonals. No need to measure.

posted on February 1, 2008 by Woodworker's Journal
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