Fowler High Precision Digital micrometer with choice of measurement range and disc-style anvil / Spindle 2 thickness measurements narrow notches and hard or closely spaced areas such as grooves and compartments LCD operates direct inch / metric conversions and has a 0.00005 "resolution and switchable 0.001mm Friction thimble provides smooth and quiet operation, and is suitable for one-hand operation IP54 certificate for dust and water protection RS-232 output provides ability to export readings to a computer (cable not included)