For Easy, On-site Measurement of Bolt Tension In Structural Fasteners

Skidmore-Wilhelm Model M Bolt Tension Calibrators are designed exclusively for calibrating power wrenches and testing high-strength bolts used on structural steel.

You need no special training, no additional equipment. Simply clamp the calibrator to a beam or column and insert your fastener. Fastener tightening then gives you a direct dial pressure reading equivalent to the tension created in the fastener - guaranteed accurate within 2% every time.

For Economical Quality Assurance

With a Skidmore-Wilhelm Model M, you can accurately simulate actual joint conditions, then, transfer the desired tightening procedure to the joint itself.
Result: consistent tightening to bolt tension specifications.

The Research Council on Structural Connections recommends that a tension-measuring device such as the Model M be available at every job site.* Obsolete torque checking methods will not let you meet approved bolt tension specifications

Avoid Costly Rework and Reinspection by Meeting Research Council Specifications the First Time You Tighten.

How do you give the best evidence of properly installed fasteners? First demonstrate with the calibrator that your tightening procedures produce proper bolt tension. Then consistently apply these procedures to the job itself.

Skidmore-Wilhelm Bolt Tension Calibrators let you build the inspection into your selected bolt tightening procedure. For inspectors, engineers, and clients alike, the proof of correct bolt tightening is right on the Model M calibrator dial.

The Model M Bolt Tension Calibrator Allows You To Verify:  

* Research Council on Structural Connections, "Specification for Structural Joints Using ASTM A325 or A490 Bolts