Thread gages are dimensional instruments for measuring and/or verifying thread size, pitch or other parameters. A variety of thread gaging instruments and tools exist such as measuring wire, tri-roll ...

For any sort of precision machine, precision adjustability is required. For the hacker this usually involves an adjustment screw, where the accuracy is determined by the thread pitch. This was not ...

I quickly calculate proper tap-drill diameters using this simple formula. Tap-drill diameter equals nominal diameter minus thread pitch. For example, drill size for a 3/8-16 thread is 0.375 0.0625 ...