Ocular or Eye-piece 



Draw-Tube 



Rack and Pinion for 

 coarse adjustment 



Micrometer 

 Screw for 

 fine adjustment 



Triple Nose-piece 

 Objectives 



Stage 



Abbe Condenser 

 Iris Diaphragm 



Pinion for 

 oblique light 



Plane and 

 Concave Mirror. 





