- 3" NIST Certified high definition, LEAD-FREE radiopaque extremity ruler used for direct measurements, teleradiology, CR and DR imaging
- Color: Clear acrylic
- Demarcations: 0.0625" increments
- Ruler sold individually
- NIST certified traceable certificate included
- Made in the U.S.A. by former members of the U.S. Armed Forces
- We can create custom digital references for your applications that are NIST* certified to your tolerances. Contact us for more information.