SLG -
Could you help me understand the latter part a bit more fully?
I have not handled the Borka, but I did just do a little reading/viewing on it.
Having a bit of experience with metrology but am not an expert - I do not understand how that tool "doesn't need calibration".
I do understand the principle of it's operation, and it seems like the internal components would be liable to producing drift or variance through wear/use over time.
More broadly per the thread - I use and have been happy with the FAT wrench for all my amateur gunsmithing/building needs
- Repeatability is more important to me than outright accuracy for the majority of fastener torquing i do while tinkering on my guns.
- The FAT wrench I have performs adequately for me, and I have tested it on a mid-level torque tester tool out of curiousity.
- The majority of fasteners I torque on guns are torqued within the middle sweet spot of the FAT wrenches 10-65 in/lb range.
- I return the tool to minimum torque after every use.
- If spending the money to get a FAT wrench or whatever other torque tool - I think it is important to get a high quality set of bits as well if not already owned.
I'm not really concerned that the fasteners on this mount may be 10% off from the desired torque setting for example as the mount and fasteners are strong enough to take it, but I do want to make sure they are consistently 10% off in the same direction so that stresses/pressure are even across the optic - the FAT wrench works for me in this regard.