Product description Range: .030" .080" ball diameter. Grade: .0005" Accuracy: .0005" Reading: 0-15-0 Face Dia. 1-1/4" Point Length: 0.66 Measuring Force: 0.5N. All pinions are mounted in an isolated assembly completely separate from outer body to maintain highest accuracies.Main body are made from high quality brass in satin chrome finish for long product life. Crucial parts are made of special non-magnetic material to have high resistance to magnetism and yield high sensitivity.Pivot point of the contact lever use miniature ball bearing construction to improve sensitivity and reliability. production purposes Package Include:1 x Test Indicator. Please confirm the size before purchase to ensure that the product is consistent with the size you need.