What is that opening at the end of a tape measure? --- Discover this and other secrets!

Some of the tools we use daily have special little secrets designed to maximize their usefulness . . . It's a real shame that most of the time we do not even know the existence of these helpful features!

In this video, we present the tape measure, an indispensable companion when you are doing home repairs! Do you know what the opening slot on the metal hook at the end of a tape measure is used for? Or why in many cases the tip of the metal hook has a serrated edge? Watch this video and discover these and a few other tape measure secrets!