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. Delivered in a box with 8/4 mm dia. stem, stylus 1/2/3 mm dia., swivel clamp and holding bar.