Thread Comparators

Variable thread comparators give a live reading of actual thread size — faster than GO/NO-GO gages. WESTport offers all three lines: Tri-Roll and STC for external threads, and ITC for internal threads. Each is a system — a frame, a dial indicator, the measuring elements for your thread, and a setting master. Use the guides below to choose the right comparator, frame, and roll/segment type, or call 1-888-400-4243.