Equipped with the “capa ì system” – That’s Brown & Sharpe’s patented measuring system, which provides absolute and comparative measurement. • Measures outside, inside, depth and steps. • Reference scale for quick confirmation. • Frame constructed from stainless steel, hardened and ground. • Automatic shut-off extends battery life to two years (2000 hours per year) with one lithium battery. • Display digits enlarged to 1/4" high for easy reading. • Tough nylon housing protects the electronic components. • Supplied with fitted molded case.