[Precise measurement, easy reading] Smooth metal wheel, loose finger design does not hurt the ruler, quick reading measurement, easy reading [High quality stainless steel, carefully forged ] Selection of high-quality stainless steel forging, using hardened process, never rust, more durable, longer life [Large-screen digital display, clear readings] Glass digital mirror, metric and imperial 2 modes to switch freely [Flexible measurement, fixing nut] Rotate the nut to adjust the tightness, fixed measurement (clockwise, counterclockwise clockwise) [Laser scale, clearly visible] Laser engraving, fine forging process, the scale is clear, convenient and accurate readings Function: Auto power on and off, mm/inch change, key lock for zero position adjustment, reset to zero after power on (absolute system), reset to zero (zero adjustment) possible in every position. Maintenance: 1. Store the clamp in a clean, dry place (moisture can damage the device). 2. Thoroughly clean the measuring surfaces with a cotton cloth. Never use benzine, acetone or other solvents. Digital Caliper Outside diameter measurement Outside diameter measurement must be be equipped with the measuring surface and the measuring surface. For manufacturing work You will find pleasure in your daily work when you have a precision instrument to measure not only external dimensions, but also internal dimensions and depths. The digital gauge is essential to ensure that the dimensions of the material are always accurate. With exceptional smoothness, thumb wheel, locking screw, mm/inch/fraction switch, large and clear display, auto on/off. Designed for long life< /p> This perfect quality digital caliper is made of durable hardened stainless steel to resist corrosion and ensure consistently smooth sliding and precise positioning. With an IP54 rating, it is perfectly protected from dust and splashing water from all directions. Additionally, to protect your investment, our digital caliper comes with a snap-closure hard case. This protects your caliper from knocks and drops and allows you to store it safely and discreetly in your vehicle or locker. In this decent package you receive: 1 x Digital Electronic Vernier Caliper lucky meet Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.