All of use have seen a measuring tape and we all think that this is the simplest tool ever! You only need to pull put the tape from inside and to see the number it shows- from the beginning to the end of the measured distance. But, actually when we use it to measure something that need to be precise, we often use a pen to mark.  And here are the most common problems. But actually the sharp serrated edge of the tape is a marking point! Here are few more tips you may not known before!

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