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Certified Steel Machinists Rules
Made in U.S.A., these rigid rules include a certificate of calibration traceable to NIST (National Institute of Standards and Technology). All have a nonglare satin chrome finish for rust and wear resistance. They also have black etched graduations and are quick-reading with numbered subdivisions for easy measuring. Meet Fed. Spec. GGG-R-791H for accuracy.
   
The pro-value rules are hardened, tempered carbon steel.

Hardened, tempered carbon steel.

Include a certificate of calibration traceable to NIST.

24" Certified Ruler
Hardened, tempered carbon steel.
Qty: $180.57


Part No. 90500
36" Certified Ruler

Include a certificate of calibration traceable to NIST.

Qty: $353.71


Part No. 90600

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