Nikon SMZU, SMZ-10A, SMZ-800, and SMZ1000 Roataing Diascopic Polarizer/ Analyzer Set.  This set for simple polarization is new but maybe not in  original box. We have one of each style in stock as can be seen in the pictures, however the sale is for only one complete unit. The analyzer will accommodate an objective lens size from 56.75 to 59.75mm and is fully rotatable 360º. The Polarizer fits the 88mm opening in the transmitted light stand, it is also rotatable 360º.  There are four mounting screw holes on the bottom of the polarizer to secure it to the stand. It is possible that this kit would work on other microscopes by different manufacturers if physical measurement parameters are met. These kits are extremely hard to find and especially in new condition! Thanks for looking.