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Nuclemed - click to enlarge

Used to define anatomical features or organs, the 0.19” (4.8 mm) diameter Flexible Ruler is a plastic tube containing 47 alternating 0.394” (10 mm) sections of Co-57 and inactive lead. The overall length of the ruler is 18.5” (47 cm) with an active length of 17.7” (45 cm). Activity is a nominal value ±15%.

Co-57 Flexible Ruler, 460 uCi