Measuring Tape Metal
Do you know what the piece of metal at the end of the measuring tape is for? This is helpful when you need to measure something by yourself. Simply wrap it around a screw or nail to hold it in place. The edge is typically serrated, which is useful if you ever have to leave a mark on the surface.
Pen Cap Holes
There is no need to worry just because there is a hole in the pen cap. This is a pretty common feature. It was added by designers so that anyone who swallowed it can still breathe freely. Maybe you also chew on the cap yourself! While it is not advisable, we cannot deny that a lot of people like to do this.