High Precision - The measurement range: 0 - 6''/ 0 - 150mm; high precision: ±0.03mm, resolution: 0.0005"/0.01mm. The caliper has a wide measuring range and small errors. Ensure you get more accurate data when measuring items and make your measurements easier.Quality Material - Made of premium stainless steel, the digital caliper is waterproof and rustproof. The housing is made of metal with a silver paint finish, which allows for long-term use. Smart Design - With auto-off function and control screen buttons, the vernier will automatically shut off after a few minutes when not in use to save battery power. What's more, the large LCD display facilitates to read more clearly and makes work easier. Easy to Use - This professional caliper will automatically shut down within 6 minutes without operation to save power. Wide Application - The digital caliper is equipped with two sets of jaws and a probe, which have four measuring methods of inner diameter, outer diameter, depth and scale, which can provide accurate values ​​for anything you want to measure and reduce the hassle of carrying various measuring tools.