300 mm Zero '0' Center Radiopaque Ruler - NIST Certified

Product Description: The NIST Certified '0' center radiopaque ruler is used for calibrating centers and quality control for scanograms, radiographic x-ray & fluoroscopy equipment. High definition, lead-free radiopaque extremity ruler used for direct measurements on a radiograph or x-ray. Engraving on detector side of the ruler, resulting in a more accurate measurement than those with the engraving on top. Color: Clear Acrylic Demarcations: 1 mm increments Ruler sold individually NIST certified traceable certificate included. Made in the U.S.A. by former members of the U.S. Armed Forces