Leitz Petrographical Student Microscope 



"III-M" 



In Stock for Immediate Delivery 



This simplified and inexpensive stand is in an ideal manner adapted 

 for Student-Laboratory purposes. It embraces the high quality of 

 optical and mechanical workmanship to the same extent as the 

 more elaborately equipped types of Leitz Petrographical Microscopes. 



Object Stage: Rotating, locm in diameter. 

 The periphery of the stage is suppHed 

 with scale and vernier for correct reading 

 of degrees and fractions. 



Micrometer Screw: ''Ball type" fine ad- 

 justment for microscope tube. 



Coarse Adjustment: By rack and pinion. 



Tube Analyzer: With correction lens, to 

 compensate for the difference in focus. 



"Amici Bertrand" Lens: In permanent 

 mounting, attached to slides (to be used in 

 connection with Eyepiece III). 



Objective Clutch Changer: New patented 

 form, objectives remain individually and 

 permanently centered. 



Three Objective Adapters: With indi- 

 vidual centering mount. 



Two Stage Clamps: 



Illuminating Apparatus: With "Nicol" prism and three-lens con- 

 denser, permanently attached to polarizer. No. 1504. 



Write for Catalog ii-B (F). 



60 East IO^^St. 



