Andy78 - Mentor Esteemed Arms Jan 18, 2014 #2 No. They should come with a factory calibration cert. Upvote 0 Downvote
Andy78 - Mentor Esteemed Arms Jan 18, 2014 #4 Lol, well yes, but not by the end user, which I assumed the op meant. Plus 5 pedantry points Upvote 0 Downvote