Radical Instruments offer Senior Precision Rotary Microtome. Radical Instruments is an ISO: 9001 certified manufacturer of biological and industrial instruments. The Senior Precision Rotary Microtome is a device providing all advantages of precision rotary microtome. The interior mechanism is seated on a heavy cast iron base, covered with a metal cover for protection from dust and grit. The Senior Precision Rotary Microtome is equipped with a ball and flange type object holder to get exact centering of specimen, knife holder with lateral movement permitting use of complete knife edge and has feed range from 1-25 microns in steps of 1 micron each.