MARATHON CO030150L Digital Caliper 6in/150mm (Left Handed) Caliper Range: 0 to 6 inches or 0 to 150 mm When measuring with this caliper you can now move the head from right to left using your left hand only 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