Originally Posted by Mark II
I didn't know about ultrasonic until lately. So I can't speak to it's accuracy. In a Double gun class I took 3 separate mechanical gauges with 3 people using them came within .001 of each other in measurement so it was repeatable. Does anyone have an idea what an ultrasonic device costs?



https://www.google.com/search?clien...eFelsko+UTG+P1&ie=UTF-8&oe=UTF-8