Tiny black diamonds on measuring tapes are used to mark wall studs. On most measuring tapes, the black diamonds are spaced 19 3/16 inches apart to indicate the typical spacing of joists. Wall studs, ...
The average tape measure has several useful markers that the average homeowner never really references.
On my tape measure there is a little diamond shape at 19⅜ inches, then another diamond shape at about 38⅝ inches. I have done carpentry work and know when you frame a house you use 16 inches on center ...
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