This tool is used to measure the size of all types of pipe. This caliper is very easy to use, all you have to do is put the pipe in-between the wings of the caliper, and then close them tightly to the pipe. Measure pipes all the way form 1/4th inch up to 12 inches.
Erco Pipe Caliper
If you are looking for a simple way to measure all types of pipe than the Erco Pipe Caliper is what you’ve been searching for!