This is a nice Nikon diaphot with hard to find features. It includes a filter cube holder (filter cube not included) and a fluorescence condenser with the typical nikon mount. The condenser was repaired with a clamp, but it works as it should. Also included is a F-mount to C-mount adapter for the front port. All of the sliders work as they should, though they are a little on the stiff side. The built in bertrand lens and magnifier are located just under the eyepieces and they work as they should. The condenser is missing the 4x objective phase contrast filter. The condenser focusing rack is very stiff, but it works. The stage moves smoothly in X and Y. No problem at all with the objective turret, but no objectives are included. The light source and the switch work well. A diffuser is included in the filter slot. Please email me with any questions.