1) Resolution : 0.01 mm ( metric ); 0.001" ( inch ) 2) Can measure the dimension of outside, inside , depth , and steps. Resolution : ... 0.01 mm ( metric ) ; 0.001"( inch )Can measure the dimension of outside , inside , depth , and steps .Positive ... metric scale ( lower ) and inch scale ( upper ) Caliper, Indicator and Micrometer