Sealey digital feed display sealey sm3002dfd digital display for the cross slide and the compound tool rest to replace the standard graduated scales these lcd units improve accuracy save reading time and minimize errors imperial or metric readings may be selected and the reading can be zeroed at any point three decimal place metric and four decimal place imperial displays with an accuracies of 0 025mm 0 001 supplied with lr44 cells sealey sm3002dfd digital feed display