Do you want precise and durable digital calipers? Our calipers have precise measurement units, multiple measurement modes, with an accuracy of ±0.02 mm / 0.001 inch. At the same time, we are made of high-quality, durable stainless steel material, with long service life, perfect for daily use and home use such as screws, jewelry, DIY gadgets, etc. Product Features: 1. It has 4 measurement modes: external measurement, internal measurement, depth measurement and step measurement. 2. The large LCD display helps you get accurate results easily and automatically. 3. Heavy duty waterproof stainless steel body, dust protected and splash water resistant. 4. After you don’t use it for 5 minutes, it will automatically turn off to save power. 5. By simply touching the button, users can easily set zero and start a new measurement at any point of the scale. Ideal for measuring different length units. Specifications Measuring range: 0-150 mm / 0-6 in Resolution: 0.01 mm/0.0005” Accuracy: ±0.02 mm/0.001” Display: LCD screen