Rules of Thumb

I already know that part of my thumb is about an inch long, so I can use that as a (somewhat small) ruler – ergo the “rule of thumb”. There are many other such tricks out there that range from the interesting to the truly useful (YMMV) and there is even a web site: where you can peruse these!

If you like trivia like I do, give it a try!

And this being the internet, I am sure I will get comments on the origin of “rule of thumb”…