Boley Style Sliding Jewelers Gauge 100mm

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This Boley style jewelers sliding gauge gives quick measurements of inside or outside diameters in millimeters. You can even measure mounted stones! Made of stainless steel it can measure 0-100mm; features knurled locking screw, notched jaws and Vernier gauge.

  • Made of stainless steel
  • Notched jaws for inside/ outside measurements
  • Can measure mounted stones
  • Locking screw and thumb slide
  • 0-100mm Vernier gauge
  • Size: 5-3/4" inches (145mm)