3d printed Nikon 0.9 Abbe condenser conversion kit  works with darkfield, polarizing, Rheinberg, oblique, gradient and etc. combined illuminations. Filters can be placed on the top or to the bottom of the removable tray (or both, by combining different illumination techniques). The cylinder and bottom tray are held together by neodymium magnets and all set can be rotated inside the condenser in order to achieve required illumination. Rotatable adapter allows to use polarizing, Rheinberg, retardant, gradient etc. filters. Please see the video: https://youtu.be/583-nqNBLX8

Kit contains:

-conversion cylinder

-bottom tray

-rotatable adapter

-32mm retardant mica filter (can be used bellow the specimen, not above the objective), works much more better than simple film retardant.

-36pcs 32mm darkfield/oblique filters ("Y" shape filters are blanks to make your own filter or use for the retardation film filter)

-1pcs 32mm polarizing film filter

Condenser and Rheinberg//Hoffman/pseudo DIC filters are not included !