Convert Existing Keyway Trigauge to Digital Readout: $699.00
We can take your existing model keyway trigauge and convert it to Digital Micrometer heads with 50 millionths rendering for data collection.

Calibrate with Certification: $95.00 + Parts

Recondition with Certification: $125.00 + Parts

After 1 year of use, Dreier Corp. recommends that the gauge be recalibrated/reconditioned.

Case included with Purchase of each Tri-Gauge.

Model R, Tri-Gauge:

Features horizontal and vertical indicators with sliding dovetails and sensitive probe tips. These work in conjunction with micrometer. Tri-Gauge has accuracy down to .0005 of an inch (.01mm). The first of its kind. Tri-Gauge performs three critical measurements on shafts from 5/8″ (16 mm) dia. to 6″ (154mm) dia.

Cost: $1,492.00

Cost with Digital Readout: $1,992.00

Model L, Tri-Gauge:

Designed by machinists and quality assurance people for today’s machinists. Patented, precise, productive. Same design as Model R with capabilities for three critical measurements on larger shafts from 6″ (154mm) dia. to 16″ (407mm) dia. Helps eliminate lost production time and waste parts.

Cost: $1,795.00

Cost with Digital Readout: $2,292.00

Model S, Gauge:

Same design features as larger model Tri-Gauges except no indicator and probe related to measurement or perpendicularly of sidewalls. The latter measurement is not practical.

Cost: $1,302.00

Model SW, Gauge:

A different concept from the Tri-Gauge, designed specifically for precise measurement of centerline measurement of Woodruff Keys and bottomless keyways on bushings. Small Woodruff Gauge is designed for American Standard keys #404 to #807. Has precision and practicality.

Cost: $1,302.00

Model LW, Gauge:

A larger version of the Model SW Woodruff Gauge. Precision centerline measurement of Woodruff Keys and bottomless keyways on bushings for American Standard keys from #608 to the largest. An essential production tool for your work centers.

Cost: $1,302.00


A separate accessory, custom made to fit your specific tapered shafts, is used in conjunction with the Keyway Tri-Gauge to take the three critical keyway measurements at the job site. Only the application (tapered shafts) is somewhat different. There are no differences in the many advantages gained with the easy to achieve accuracy of the Keyway Tri-Gauge. To order your gauge for tapered shafts, send an email and print of your shaft dimensions.