Driver is the most common size used with scope mounts
Works on bases and rings
Does not tighten above 25 in.-lbs.
The fixed T-15 driver is the most common fastener used with scope mounts and takes the guesswork
out
of how tight to torque the base and ring screws. Wrench doesn't tighten above 25 in.-lbs. and won't
torque
past preset specification.
Tried it on three different scope mounts. Dismounted each rifle and remounted the scope rings and scope. Since there was no aberration in the performance of each rifle with favorite handloads, I would assume that the Warne Torque Wrench has lived up to its description with absolute perfection.
I calibrated this type torque wrenches for over 30 years in the aircraft industry. Unless you have a torque analyzer, you don't know if they are calibrated correctly. The wrenches with a pointer are the more accurate, if they return to zero they are calibrated. This wrench or any of the ones that slip or click when the set torque is reached will not stay calibrated.