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Satisfaction Guaranteed; Every Tri-Gauge Carries Its Own Certificate Of Calibration

Your Keyway Tri-Gauge comes to you as a high quality precision instrument, individually calibrated in accordance with strict standards set by the Dreier Corporation. Equipment used in the calibration has traceable accuracy to the National Institute of Standards and Technology. Every Tri-Gauge is individually inspected and thoroughly tested. The Dreier 14-Day Money-Back Guarantee assures you of complete satisfaction with the construction of the instrument and its performance. Any questions or concerns should be addressed to the Dreier home office in Milwaukee, Wisconsin.

To place your order, chose one of the following:

Your satisfaction is guaranteed!

  • 10% Discount... on orders of four or more units, and combination of models.
  • Optional Accessory For Tapered Shafts... use with Tri-Gauge to measure keyways on your specific shafts. Ask for an estimate – blueprint required.