Zeiss

This is a Carl Zeiss Achro-Aplanatic condenser with a numerical aperture of 1.4. Flange fitting with iris diaphragm. Very good condition.

This is a Zeiss mercury vapour fluorescence light unit complete with lamp housing and mercury bulb but no transformer. The mercury bulb is 50 watt. The system has the 2Fl cubes and is in excellent condition.

We have included this Zeiss Jena item here because of its rarity value. Dating from about 1920 this is a numbered cross hair slide used for centring the rotating circular stages of polarising microscopes. Its presentation box is in truly excellent condition. A collector's item.