Precision Measurement: Measures 0 to 6' (0 to 150mm) in 0.0005' (0.01mm) increments for precision use. Versatile Readout: Digital readout LCD shows inch or metric units for versatility when measuring. Advanced Sensor: Advanced onsite sensor (AOS) electromagnetic inductive sensor for resistance to dirt, oil, and water. Multi-Functionality: Measures inside, outside, depth, and step values for versatility. Ease of Use: Includes a thumb roller for smooth operation. Protective Accessories: Comes with a protective case and SR44 silver oxide battery. Application Fields: Commonly used in metalworking, mechanical engineering, machining, carpentry, and medicine.