All claims must be made within 30 days of purchase. Pete FThe real Leigh liked this post. For your own work they should be fine. Obviously there are more pitches than the sixteen covered by the Pee-Dee wire sets. It doesn't have to be Mitutoyo but I prefer the type that "clips" on to a micrometer. A display with 2 studs of the same thread pattern and pitch diameter but with a varying minimum and maximum diameter of the thread. You will not see our advertised products at a lower price or we will refund or credit the difference.
However keep in mind the more precise of an instrument, the better.
SPI PEE DEE Thread Measuring Set - 98-370-0
Originally Posted by Pete F. It doesn't have to be Mitutoyo but I prefer the type that "clips" on to a micrometer. Calculate the outer thread diameter. Originally Posted by IronReb. The resulting value is the pitch diameter. See 1 more picture. To do this simply use a ruler and count how many threads are located within a 1 inch distance.