Guard-Opening Scale – ANSI / CSA (KSC098)


Product Description

An ANSI and CSA guard opening scale is a valuable tool to use during the design, installation, and inspection of guards to make sure they comply with ANSI and CSA safety standards. This folding guard opening scale is based on “A Review of Machine-Guarding Recommendations” by Donald R. Vaillancourt and Stover H. Snook of the Liberty Mutual Research Center for Safety and Health.

ANSI B11-series safety standards utilize the guard opening data from Vaillancourt and Snook’s studies. The Canadian power press standard, CSA Z142-02 also uses the data from this study.

When a guard is used as the primary safeguarding method, it must be designed, constructed, adjusted, and maintained so that someone cannot reach under, over, around, or through the guard. Any openings created by the guards must be checked for compliance with ANSI/CSA safety standards.

English units on one side and metric units on the other side

  • Powder-coated aluminum for added durability
  • Compact—folds to one-third its size to fit in a pocket
  • Silk-screened markings will not rub or scratch off
  • Use it to check openings for compliance with ANSI B11 safety standards and Canadian safety standards (CSA)

Please refer to our Quick Reference Sheets for “how to use” instructions.

Rockford Combustion Solutions provides fuel-train management and combustion-safety solutions for safety-conscious organizations that work with fuel-fired equipment in thermal processes.

Combustion Solutions Include:
• Consultative inspections and Assessments
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• Standard and Engineered-to-Order (ETO) Valve Trains
• Controls and Components

We Enable Organizations to Improve:
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5795 Logistics Parkway
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