I'm wondering if y'all are familiar with any increased rate of tendonitis in the elbow from constant threaded ring gage calibration. I'd assumed it was kind of a fluke when my left elbow started hurting when holding the larger set plugs while calibrating. Now my right elbow is hurting and I'm more than a little concerned. I kinda need my arms and hands to be functional to earn a living. I've been performing these calibrations for about 6 1/2 years now, current job, and am going to be putting the set plugs in a vice from now on. I've been using the vice for the larger sizes, over 1.75" or so, for some time but am thinking that's not enough. Do those of you who perform threaded ring gage calibration use a vice to hold the set plug? Is this common?