Rotary Senior Microtome (A.O. Spencer 820 Type) has streamlined standard equipment incorporated with latest technology for cutting serial section in research work. The precise feed mechanism cuts section from 1-50 microns in steps of one micron each. Free Adjustments: 1-50 microns. Total feed excursion 28mm with opening of object clamps 37x27mm. Overall dimensions 16x10x9” Complete with razor 120 mm with 120mm with back & handle, honing plate, object holder set of three, oil can. Packed in a wooden box. Rotary Senior Microtome is simple but versatile microtome for uniform sectioning up to 25 microns in step of 1 micron each. The mechanical system encased in a removable cover.