Why is the tape measure loose?
Why is the tape measure loose?Ha-ha！ This question a lot of people do not understand the mystery, in fact, when your careful observation is not difficult to understand, there is a top tape measure and hook measurement in actual use, some loose parts of 1-1.5 mm reflects its value in front, no matter which way the head feet are back to the starting and ending positions of principle the purpose of it, in order to measure more accurately, this is also the research and development of the essence!
Two floor on the right, simply said is to let you regardless of the amount or amount of the top are accurate
