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". Requires CR2032 – 3V Li-ion batteries (not included).