6"  in 1 electronic caliper with fractions.  It comes in a plastic case. Hardened Stainless Steel Body
• Units: mm, SAE, Fraction
• Measuring Range: 0-6”/ 0-150mm
• Resolution: 0.0001” & 1/128” & 0.01mm
• Accuracy: /- .001”
• Wide LED Screen Display
• 3-Way Measurement: External, Internal, Depth
• Requires 1AG13 Battery
• Comes with 1 Additional AG13 (LR44) Replacement Battery