3d printed Nikon Achromat 0.90 condenser conversion kit  works with darkfield, polarizing, Rheinberg, oblique, gradient and etc. combined illuminations.  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 for the similar setup with the Nikon Abbe 1.25 condenser: https://youtu.be/583-nqNBLX8

PLEASE check the drawing: some condenser versions have less room for the insert, 7.3mm instead 14mm, this insert is for the 14mm !

Kit contains:

-conversion cylinder

-bottom tray

-36pcs 22mm 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

-rotatable adapter

-32mm retardant mica filter (can be used bellow the specimen, not above the objective)

Condenser and Rheinberg filters are not included !