What tool to measure very small diameter holes?
What tool or device exists to measure the diameter of small holes that are less than 2mm in diameter? I'm needing to measure down to 0.8mm and up to 1.5mm in .1 increments.
Accepted answer
An Optical comparator, or Shadow Graph is not the cheapest, but probably one of the best. They have an edge finder option used for this. It can find the center or even distance between holes. Very nice tool.
