Pi Tape, 2 To 12 Inches, .001 Inch Divisions

Used to measure the diameters of concrete, soils and asphalt cores and cylinders. Made from spring steel tape with ground surface, numerals and graduations engraved and acid etched. Diameter range: 2 in to 12 in (5.1 to 30.5 cm). Accuracy to 0.001 in (0.025 mm) with Vernier scale.