There are few features of the things we use regularly but we never noticed them and think that they are of no use. From the ball point pen caps to the wings of the apple adapter everything has a purpose to fulfill. But these things are so normal that either we ignore them or don’t even notice. Here are some of those things you’d never know was this important.
1. What’s that mysterious blue side of an eraser
This was a great suspense or say was a mystery for children of middle school that what was the blue part of eraser meant for? In real the blue part of the eraser was for the heavy weights of paper where as the pink part was for the light grades of paper which would tear apart.