Features: Polishing stainless steel frame with knurled thumb roller and locking screw ensure smooth sliding and accurate positioning in use. Measuring is 0-150mm, accurate measurement, Caliper with two set of jaw can be used to measure inner and outer diameters, depths and step. A hard glass cover, scratchproof coating,suitable for home or DIY measurement. This product also have the zeroing function, rotating makes it easy to resets 0 or choose a different baselines if desired. Easy to resets 0 or choose a different baselines if desired Thumb roll allows exact positioning and lock holds reading in place. Adopts roller, which is fast and convenient to measure 45 degree chamfer, no harm to hands Wear resistant rack is thin and hard. Specifications: Material: Aluminum Size: About. 24.5x9x2.7cm/9.65x3.54x1.06in Package Includes: 1pc Vernier Caliper note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.