What That Black Diamond On A Tape Measure Is Actually For

Of course you know what a tape measurer is used for, but most people have no idea what those tiny black diamonds are for. It’s one of those things that we’ve all seen, but likely wouldn’t be able to tell you what it’s used for. So listen up all guys and gals, this might come in handy the next time you break out the tools to get some renovation work done on your home. 
Let’s take a look, shall we?
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We all know what a tape measurer is used for, but most of us don’t know how to take advantage of all of the nifty markings on it. 

You’re probably wondering, “there are markings other than numbers on it?”

Yep, and they can come in handy in the odd situation. 

These markings are most familiar to us.

On top, the larger numbers represent inches, and the smaller numbers on the bottom indicate centimeters. 

Ever notice those circled Roman numerals? These represent the level of accuracy the tape measure has.

The smaller the numeral, the more accurate the tape measure is. Some tapes don’t even have a guaranteed level of accuracy.