Just a FYI, but wheeler came out with a digital unit that is only $10 more.

https://www.amazon.com/Wheeler-Digital-Firearms-Accurizing-Torque/dp/B01B3NW5TG/ref=sr_1_1?s=sporting-goods&ie=UTF8&qid=1514665150&sr=1-1&keywords=Wheeler+Firearms+Accurizing+Torque+Wrench++digital

On the anolog one, it works up to 65ftlbs, so great for most scope work where you will have the base nut that needs to be torqued to 65in lbs, but that is it max.   Also, you have to remember to dail is back down to zero once you are done using it, or it going to go out of calibration quickly instead.

As for the digial one, more precise setting in different form of messurements, will go up to 100in lbs, but instead of the click cam over when you hit torque, you get the buzzer isntead.

[youtube]https://youtu.be/S_o_aV9aM3o[/youtube]

As for which is best, just depends how much your going to use it.  If once in a blue moon, the anolog since you can leave it the box for years without fear of the battery going dead.   If your using a great deal instead, then the digital since you don't have to back it off to zero after each use, and your going to be using the battery without it going dead by itself isntead.

Problem is that vortex torque screwdriver only goes to 50 inch lbs, and cantilever mounts like the Burris, Nikon black, and Team Warne that use the 3/8" side nut to hold the mount to the rail, require these bolt to be torqued to 65inch lbs instead.



So although the Vortex/King Tony torque screw drivers are nice units, they are not offered in one that goes up to 65 in lbs instead.

https://www.kingtony.com/kt_old/products/products_detail.asp?id=795&cid=9&cid1=98&sizeid=0&subid=0