The little slot at the end of measuring tape. Most measuring tapes come with a metal stub with a small slot on the end. In case all your hands are full, hang the slot on a nail for measurement. If you look closely, you will also notice that the stub is slightly serrated on one side. It can be used to mark the points without a pencil.
It's correct though, I can remember all the publicity when they were first introduced.
So if I try to save your life, but you see that it will make you uncomfortable, can I assume you will pass on the help?
Yes, had me totally confused .