Stop in for a cup of coffee

The USAF only let you use them with a breaker bar and no adapters at all. So if it is sat 3/4 drive you can't adapt it to 1/2 if that makes sense. What's funny I did a lot of HF ones when other guys got them for home use. When new they are right on the money. Like any adjustable torque wrench drop it either get it calibrated or toss it. Biggest thing to remember is to break it three times in the direction and setting you will use then set it say half way there do the first order of tightening set it to what you need then and continue. Those publications have way to much then you want to know about them
Chris get two HF ones. 3/8 drive and 1/2 and your set for under $50, or want to go high end CDI makes them definitely for Snap on, and Mac I believe also.