Starrett - 12" Combination Square 11H-12 (Rating: 5)

Accuracy, reliability, & quality; I received this a a Christmas present but have not had a lot of shop time until this fall. I love using this square on my projects and when setting up my machinery. The scale is very easy to read, the head slides easily along the length of the rule and it is about the easiest to put back on when you take it off as I sometimes do.

Is it expensive? Yes, but I feel it's worth every penny.