Fowler52-603-303-0, Thread Triangle Set

Charts are poor print quality. But great tool. Faster than wires.

Good set, just be careful when choosing size to work with...this set was smaller then expected

What i got was not fowler. They are cheap off name brand.

Thank you!

These can be a bit tricky to operate the first time or two, kind of like three wire with no little cheaters, ie elastic or silly putty. They have a lot more versatility then most single thread mikes. As far as I can tell, the accuracy is great and consistent, will be worth getting another one or two to leave setup on the most common thread diameters.