SUBSTAGE CONDENSERS AND CONDENSER MOUNTS 



125 



microscopy. The condenser mount is the single-unit type. The 

 condenser diaphragm is located at the second surface of the bottom 



Fig. III.5.8. Phase microscope with pancratic condenser system supplied by 

 Officiiie GaUleo. Courtesy of Officine Galileo (1949). 



element of the condenser. A separate bottom element with diaphragm 

 is mounted in a plate and is inserted in the substage movmt as required 

 for working with one of the phase objectives. Each element is center- 

 able in the substage mount. Figure III. 5. 9 shows a Bausch and Lomb 



