Thread Gauges marketed by us, are used to measure the dimensions of a thread's form angle, pitch, and diameter. Our gauges are essential for ensuring that tapped holes, nuts, bolts, and screws comply to the tight tolerances necessary in most manufacturing procedures promptly and precisely. They are very effective to use. Thread Gauges are used to determine the exterior and internal thread gradients. The pitch or lead of a screw head is measured with a thread gauge.