Plain ring gauges are manufactured by IAC Instruments direct and custom sizes, fast delivery. Buy online world wide shipping and MFG of thread gages instruments: Full range of plain cylindrical ring gages, expert geometrical engineers.

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Helix Angle Standard

The Click-on support adapter, an time-saving, easy,fast and reliable fixture, for all your thread gages.

XPL Series

Series XPL from thread sizes for Watchmakers until large size diameters 400, 500 or 600 mm