with metal housing cover and metal buttonsmechanical system made of stainless, hardened steelwith or without thumb wheel (included in delivery for customer to fit if required)large LCD display with clear read-offs, figures 9 mm highdisplay accuracy 0.01 mm/ 0.0005"measuring tips ground fine and lappedON/OFF buttonwith depth gaugeunit of measure in mm or imperial, zeroing possible at any positionincl. 2 x 3 V batteries (type CR2032) packaged in accordance with UN 3091, Class 9in plastic case