Digital Counter Tallys Number of Tissue Sections Cut and Recycles at Selectable Intervals

Abstract

A digital counter is described for use on any microtome. The counter performs three independent functions: 1) a cumulative count is maintained, 2) a second interval counter recycles each time a preselected number of sections are cut, and 3) a third rounds counter records the number of times the interval counter recycles and also recycles at selected intervals. The digital counter activates relays when recycling and can control motorized microtomes during serial sectioning.