I’ve Always Noticed A Black Diamond On My Tape Measure, But Had No Idea Why Until Now

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If you’re like me, a tape measure is an important tool in your utility drawer or tool box. And one thing my father taught me that I’ll never forget is to always measure twice and cut once. Because once you cut, you can’t undo it. I’m sure you’ve heard the old proverb yourself…
While you’re certainly familiar with the inches and centimeter markings on the tape measure, there is one object that might not be as familiar to you. But YouTuber Tom Hintz has decided to take it upon himself to educate the masses about the mysteries of the tape measure. And one thing he stresses is the black diamond you’ll find if you look closely.
Check out the video below and you’ll see the black diamonds between the 16 and the 24 inch marks. Watch the video and you’ll see why it is useful to have these markings.
While people can always just do the math in their head, the visual aid of the diamonds makes it much easier.
With that black diamond, you can hang frames, decorations, and other things from the wall easier. You will no longer need to worry if you’re doing it wrong. Check out why in the video below!

In just 3-minutes, Hintz describes all the markings on the tape measure that you’ve probably been wondering about.
All markings do the same thing in different ways. These included the 16-inch on center mark, the 24-inch on center mark and the black diamonds.
The 16-inch mark indicates the most common separation for studs. The 24-inch can be used for stud separation for small buildings like garden sheds.
The black diamonds are equidistant between the 16 and 24-inch markings. They allow you to lay five rafters beneath each 8-foot piece of plywood.
Watch him show you how to use the markings at the 1:40-mark in the video. He starts with 16-inch centers, which is the most commonly used stud arrangement.
Here are some viewers’ responses about Tom Hintz’s useful tutorial.
“Thanks makes a different even who I’m designing clothing. Yeap it does”

“I’ve been using tape measures for decades and never even noticed those little marks, as much as I can recollect.”
“explained very well. I wouldn’t have guessed what it all meant”
“Cool video!  Thumbed up for learning something new!  Also the humor factor was spot on!  Thanks!”
“And just think, If you use metric you wouldn’t have to have these complicated measurement markings and extra calculations.”
“The diamonds, many call them “truss markings”. But in Canada, the are joist markings. The 3/4 inch floor sheeting is rated to a maximum of 24inch span. Or, 4 spaces (5 joists) for every sheet. But to shrink it up so it has more tolerance and not at it’s “maximum” They use a spacing that is smaller than 24in, but bigger that the old standard, 16inch (6 spaces/7 joists).”
Did you know this about tape measures? These devices have more going for them than you’d suspect.
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