Why is that your tool is never as big as you think it is?

Well I've been rooting around the workshop looking for it for a while. I need a 19mm hole you see. And I forgot where I left the damn thing.

A step drill you understand. Well, I spent an evening looking for it last night and then found it tonight, always in the last place you look...

Trouble is it only went up to 12mm so tonight I've had to blow £20 on a bigger set.

Hope it works, I've got to cut a neat hole in the pristine dash for a fire extinguisher button....

Anon.