Measuring Range 0-150mm (06") Can display in Metric or SAE Also can measure hole/tread depth Can measure internal and external sizes. Carbon fibre construction Professional tool for commercial or occasional use Precision made Vernier Caliper Features a large LCD Screen for easy use. Carbon fibre construction so lightweight to use but till strong enough to last Suitable for both internal and external sizes. Also can measure hole / thread depth with the built in depth stop. Simple way to make accurate measurements of internal and external distances up to 150mm Includes depth measuring tool Can display in metric or SAE (imperial sizes) Measuring range 0 150mm / 0 6" Accuracy plus or minus 0.02mm (0 100mm) range and plus or minus 0.03mm (100mm plus range) Accuracy is also effected in areas of very high humidity (over 80%)