I have two Warren and Brown deflecting beam, 1/2 and 1/4 do need to check you get correct adapters for sockets youre using, it, they are expensive too.
W & B deflecting beam, the best torque wrenches of them all, moderate price.
All torque wrenches need to be checked depending on how often you use them. I checked mine every 3 months or so, but then again it was being used every day in the higher 10s.
I don't like the sudden release torque wrenches, they jar my wrist. Smooth ramp and beam for me ....'click!'