Rotary senior microtome (spencer 820 types) streamlined standard equipment incorporated with latest technology for cutting serial section in research work the precise feed mechanism cuts sections from 1-50 microns in steps of one micron each.feed adjustments 1-50 microns total feed excursion 25mm with opening of object clamps 37x27mm overall dimension 16x10x9” complete with razor-120mm with back & handle honing plate object holder set of three ,oil can packed in a wooden box (b) as above but micron setting in front for quick & clear glance.