Performs easy and accurate measurement of narrow or recessed areas, plus inside and outside diameters that dial indicators cannot access. Resistant to water and dust thanks to the one-piece bezel and crystal design with O-ring. The glare-free flat crystal face has a scratch-resistant coating. 0-40-0 dial reading, .3N or less measuring force, 20.9mm L. Delivered in a box with 8 mm dia. stem, stylus 2 mm dia.