8 4 



Nos. 162 and 163. Analysers. The Analysers supplied by us are, as a 

 rule, prisms of 6 mm aperture with their top and bottom faces at right 

 angles to the microscope axis. The mount of Analyser I is so arranged 

 that the prism fits immediately upon the ocular. Analyser II is fitted with a 

 divided circle attached to the tube, above which the prism revolves. 



Nos. 165 to 168. *ABBE's Analyser-Oculars. In addition to the above we 

 supply the ABBE Analyser-Oculars. These consist of an analyser of special 

 construction situated between the lenses of HUYGENIAX ocular 2 (Xos. 165 and 166) 

 or compensating ocular 4 (Nos. 167 and 168). The oculars (Nos. 166 and 168), 

 too, may be fitted with divided circles. 



Nos. 169 to 174. Combinations of Polariser and Analyser. For con- 

 venient safe-keeping we supply various combinations in special cases. 



In subsequent ordering No. 173 or 174 the factory number of the Stand 

 should be stated. 







If one be already possessed of a divided circle, as, for instance, that supplied 

 with our Goniometer Ocular, it can be adapted to take the Analyser. In this 

 case a charge of 3 Marks, over and above that specified for the combination 

 without divided circle, is made, for supplementing and adapting the mount of the 

 Analyser to the existing divided circle. The divided circle must be forwarded 

 us for this purpose. 



