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Norwolf Calibore 100

The Norwolf Calibore Bolt Tension Calibrator is the lightest, most compact and versatile in the industry. This all-in-one solution doesn’t require any additional tools to assemble so you can get right to work.

The Calibore 100 has a bolt tension capacity of 100,000 lb.

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 Calibrator Features & Benefits

  • “Snap-In” front plate & hex bushing
  • Built in adjustable reaction bar
  • Gauge reads in both pounds and kilo newtons
  • Solid, heavy duty gauge protector
  • Solid milled clamp that secures at points for beam mounting
  • Drilled holes provided for base / table mounting
  • Fitted, wheeled carrying case
  • Light weight- 17.5 lb. (compared to competitors at 45 lb.)
  • Available in 350K and 1,000k

Capacity: 100,000 lb. of Bolt Tension



CBT 100 Minimum Bolt Length
Bolt Diameter  Bolt Length 
5/8″ 1-5/8″
3/4″ 1-3/4″
7/8″ 1-7/8″
1″ 2″
1 – 1/8″ 3-1/8″


The Calibore 100 can be used with our adapter kits to test the following bolts sizes:


Imperial Metric
5/8″ M16
3/4″ M18
7/8″ M20
1″ M22
1 – 1/8″ M24


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Kind words from our customers:

  • It was a great pleasure working with GWY. They go above and beyond to help with what we needed. Don was very quick on getting what we needed out to us to complete the job. Very proud to be a GWY customer.”

  • GWY’s parts inventory and response is top notch. You can expect prompt, respectful, knowledgeable answers to questions and full cooperation when you need it. Truly a mark of a reputable company with a good team.”


Do you sell tools outside the country?

Yes, we provide tools all over the world.

Does the tool come with anything?

All of our tools come with a case.  Our Turn-of-Nut & Shear Wrenches come with the one size socket and a metal case.  The cordless tools come with one or two batteries, a charger, and a case.

Is there a warranty on your tools?

1-year manufacturers defect warranty on new tools.

What is the lead time on getting this tool to me?

If we have it in stock, we can send it next day air within the US to get to you tomorrow.