MaterialThe digital calipers are made of plastic and carbon fiber composite material, which is strong, lightweight and corrosion resistant. Lightweight and compact, this scratch resistant gauge is easy to use and rugged. The lightweight construction provides excellent protection against plastic body drift due to hand shake and strikes a good balance between glide length and value retention. The edges of digital calipers are not sharp enough to cut people or objects.Versatile digital calipersConventional digital calipers can easily and accurately measure OD, ID and depth. It is a suitable tool for daily life, widely used in schools, households, laboratories and factories.Measurement AccuracyThe calipers are equipped with an LCD display to help you get results quickly. Vernier caliper measuring range: 0 - 6" / 0 - 150mm; resolution: 0.01" / 0.1mm; Accuracy: 0.2mm/0.01". Please note that it is not suitable for professional use with extreme precision.UsageYou need to press the red power button before using the caliper, then select the appropriate jaw and length unit by depending on the item to be measured, so that you can start measuring. With the reset function, the calipers can be recalibrated at any time to increase accuracy. The millimeter/inch conversion function can be adjusted to adapt to different user habits. On/off button and auto shut off after 5-8 minutes help you save battery power.Package ContentElectronic Caliper