I sometimes work in electrical panels and they have markers with numbers on for terminals, wires etc. One day I was head in a panel trying to work out a proble

I sometimes work in electrical panels and they have markers with numbers on for terminals, wires etc. One day I was head in a panel trying to work out a problem and realised it had got to the point where I could not get my head far away enough from the wire markers to read them. Got a set of clear bifocal safety glasses for about $14, made life heaps easier. Apparently you can get stick on bifocals that you can apply to any glasses as well.