The 1/2" drive unit I have still has the light that lights up when you reach the desired torque. Those old ones with the dial gauge are some of the toughest hardest to get out of calibration torque wrenches ever made. I sniped it off Ebay for 69 dollars. I gave it to my Snap On man and he checked it and it was not even out. They are that good. Nothing in the world wrong with buying good used tools.