MARATHON CO030150F64 Digital Caliper With Fractions- 1/64in Caliper Range: 0 to 6 inches or 0 to 150 mm Instant inch/millimeter conversion. Switch between metric and imperial measurements with great ease. Absolute, floating zero, and relative measurements (you can zero out at any point) Caliper has External, internal, step and depth measurements Caliper comes with carrying case and extra battery