Swiss Precision from Wiha Division KWB Switzerland. Non-metallic high-tech material with 50% fiberglass content. Ideal for Small Delicate Parts. Thermal Stability Short Contact 180ºC - Continuous 100ºC. Chemical resistant- organic solvents, alkalis, & petroleum products. 6" CaliMax Vernier Caliper With .1mm/ 1/64" Accuracy. Does Inside, Outside, Depth and Step Measurement. Super Light Weight For All Day Non Fatigue Handling.