BAIRD &IATLOCK: (LONDON) LTD, 



1104 





1105 



1104' Microscope, Zeiss, Stand Hlme, specially designed for Mineralogical and Crystallo- 

 graphic Investigations. Coarse adjustment by rack and pinion. Fine adjustment by 

 Berger's new micrometer movement. Complete Abbe illuminating apparatus, and 

 swing-out condenser, N.A. 1.40. Draw tube provided with rack and pinion, and with 

 Amici Bertrand lens. Polariser and analyser with graduated circle above the ocular. A 

 second analyser is mounted on slide immediately above the objective with selenite plate 

 red of the I. order. Mica plate ? and Biot-Klein quartz- plate. Large mechanical stage 

 graduated on the circumference and with line index. Price in polished mahogany 



... 30 o "o 



Achromatic objective a2 . . . . . . . . . . o 12 o 



,, A . . . . . . . . i o o 



DD . . . . . . . . . . 2 TO o 



F .. .. .. .. .. i is o 



j-m. oil-immersion lens, N.A. 1.30. . .. .. .. 650 



Eyepieces with cross lines, Nos. i, 2, and 4 .. .. .. i 10 o 



Eyepiece No. 3. with micrometer . . . . . . o 18 o 



One tube and five objective slides . . . . . . . . 2 JS <, 



Mahogany box for ditto . . . . . . . . . . o 15 o 



Abbe drawing apparatus, large form . . . . 300 



Stage micrometer i mm. divided in T J n . . . . . . o 10 o 



Iris-diaphragm with ocular for examining and identifying the 

 axial images of crystals . . . . . . , . . . . 1.50 



case 

 A. 

 B. 

 C. 

 D. 

 E. 

 F. 

 G. 

 H. 

 I. 



J. 

 K. 

 L. 



T 



1105 T Microscope, Zeiss, Stand IVf., for Mineralogical and Crystallographic Courses. 



Coarse adjustment by rack and pinion. Fine adjustment by ordinary micrometer 

 movement with divided head, and revolving stage having a graduated edge. Objective 

 centring arrangement on the tube. Complete Abbe substage condenser, N.A. 1.20, 

 polariser, analyser, and selenite film, red of the I. order 



A. Achromatic objective A . . 



B. D 



C. Eyepieces with cross lines, Nos. 2 and 4 



N.A 



14 15 

 i o 

 i 15 



I O 



54 8 



18 10 



CROSS STREET HATTOlsr GARDEN, E- 



226 



