Skidmore-Wilhelm Calibore systems are precision bolt tension verification devices used to calibrate and verify the performance of torque wrenches, impact wrenches, and bolting equipment. They are commonly used in structural steel erection, bridge construction, manufacturing, and quality control applications where accurate bolt preload and tension measurements are critical. The products shown below represent typical Skidmore Calibore systems available from our rental fleet. Additional capacities, configurations, and manufacturer options are available upon request. Need assistance selecting the right Skidmore Calibore system? Call 866-522-5464.
Renting provides access to specialized bolt testing equipment without the cost of purchasing and maintaining it.
Yes, they typically include the required gauge or measurement system.
Yes. Calibore tools can verify hydraulic bolting system performance.
Yes. They are commonly used to verify the bolt tension produced by impact tools.
It depends on the model, but many Calibore tools test common structural bolt sizes from 3/4 inch to 1-1/2 inch.
Inspectors require Skidmore testing to confirm bolting methods meet specification pretension requirements.
Not always. Torque can vary due to friction and lubrication, which affects bolt tension.
A Skidmore Calibore tool is used to measure bolt tension and verify proper pretension during structural bolting.