What Does the Black Diamond on a Tape Measure Mean? Black diamonds seem to show up at irregular intervals along the face of a tape measure.

Many people wonder about the mystical small black diamond markings or black triangles found at 19 3/8 intervals on the tape measure. These are handy markings if you want to achieve equal spacing ...

Have you ever wondered what the hash marks, black diamonds, and red squares on a tape measure mean? We'll help crack the code—and show you how to use the tool.

One puzzling feature on more advanced tape measures for carpenters, contractors and plumbers is the inclusion of red numbers and/or black diamonds at predetermined lengths.

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 ...

The black diamonds that are found on tape measures have been a source of confusion for many - but it turns out that they actually have a very important purpose ...

Reading a tape measure seems pretty straightforward, but it's hard to get a precise measurement if you don't use it properly.