Stainless steel, hardened, Switchable from mm to inch, Measuring range 0 - 150 mm/6, Data output (mini-USB), Zeroing in any position, Measurement beak finely smoothed and lapped, Large LCD display (digit height 9 mm), Can be used with or without thumb roller (replacement part without thumb roller included in delivery for self-mounting), In sturdy protective case, In sturdy plastic case