【4 Measuring Ways】The digital caliper has 4 measurement modes, which can be used to measure inside and outside diameter, depth, and step with two sets of jaws and a probe. Multiple measurement modes can bring more usage scenarios to people, making all your objects measurable, and the measurement process is also very convenient. 【Zero Setting Function】Easy to set zero at any point by pressing the zero button, allows you to start a new measurement at once. Also zero calibration provides precise results when readouts are not accurate. 【Extra-Large LCD Screen】Makes you get clear readouts easily and quickly. Auto shutdown in 5 minutes helps you save battery power. This vernier caliper provides 2 batteries in total for long time use. 【Measure functional diversity】The digital caliper uses upper and lower jaws and a long handle to easily measure the internal diameter, external diameter, depth and step measurement. 4 measurement methods to meet your different needs, suitable for measuring jewelry, devices, hardware, woodworking,lover,DIY etc. 【High-quality Materials】Heavy-duty waterproof stainless steel body, dust-proof and splash-proof. 【Accurate Reading】 0-6" (150 mm) measuring range, ±0.001" (±0.02 mm) accuracy. 【Large LCD Display】 Digital display for instant reading, more convenient Material: stainless steel Color: silvery Measuring Range: 0~150mm/6inch Accuracy: ±0.001”/0.03mm Resolution: 0.0005"/0.01mm Display:LCD Display Battery: 1.5V,TYPE LR44.Capacity-180Mah Working Temperature:5℃-40℃/41 to 104 degree F Cautions: 1.Do not immerse this caliper tool into water or may cause damage. 2.Please keep it clean and dry, as liquid will affect measurement result. 3.Please remember to shut off power when it is not in use to save energy. 4.If readouts are not accurate, please slide the screen to the far left “0” point, and press the “ZERO” button.