I stated earlier that I just bought a Cornwell wrench and I love it. I also have three Snap On wrenches in 3/8, 1/2, and 3/4 inch drives. They're the ones that are flat and have some kind of torsion bar arrangement. They're all over twenty years old and every time I sent them in to be calibrated, I got them back with no cost because they needed nothing. I paid the price in the beginning and it's paid off. The Cornwell is a dial type. Great for setting bearing preload.