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NIST Certified Rigid Rule Set, 6", 12" and 24" Rules.
Certified rulers are made of hardened and tempered steel and feature easy to read graduations on a non-glare satin chrome finish.
Each Fowler Ruler is Pre-Certified for ISO/QS9000 requirements and includes a certificate of calibration.
If calibration service is needed, 3 will be required for this set, one for each rule.
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