31 cm / 12" Dual Scale Radiopaque Ruler - NIST Certified

Product Description: 12"/ 31 cm NIST Certified high definition, lead-free radiopaque extremity ruler used for direct measurements on a scanogram, radiograph, x-ray or fluoroscopy. Dual Scale (imperial and metric) Engraving on detector side of the ruler, resulting in a more accurate measurement than those with the engraving on top. Color: Clear Acrylic Demarcations: 1/10" on top and 1 mm on bottom Ruler sold individually NIST certified traceable certificate included. Made in the U.S.A. by former members of the U.S. Armed Forces