Features: • Height: 1.57"/40mm, Dia. 0.78"/20mm • Height accuracy -0/+0.005mm •Repeatability, ± 0.000039"/0.001mm • IP67 protection • Carbide touch surface (0.196"/5mm) • High precision bearing guide system for long life • Interchangeable magnetic base • High visibility LED indicator • Movement stroke 0.078"/2mm • Trigger force: 54-188-140-0, 1.0N (3.6 oz./100g) • Operation temperature +5°C to 50°C (40°F to 120°F) • Uses 2, 1.5V batteries (SR44 or LR44) • Battery life approximately 250 hours (on time)