For over 60 years, SPI has introduced innovative products to the metalworking and laboratory industries. SPI measuring instruments are durable, precise, and reliable ? all backed by an industry-leading 2-year warranty. What is super polymid? Fiberglass-reinforced polymer that gives the tool strength without the weight of steel. This Genuine Swiss-made Swiss Precision Instruments metric dial caliper features inside, outside, depth, and step measures from 0 to 100 mm with 10mm per revolution with 0.100 mm graduations. Item SKU is 03883972.