144 



A. Complete Microscopic Outfits, comprising all the more important 



Accessory Apparatus. 



Specification 1. 



Apochromatic Objectives: 



16 mm 8 mm 4 mm 



0.30 num. Ap. 0.65 num. Ap. 0.95 num. Ap. 



80. 100. 140. . . . Mk. 320. 



2.5 mm (Water Immersion) 250. 



1.25 num. Ap. 



2 mm 3 mm (Homog. Immers.) 



1.30 num. Ap. 1.40 num. Ap. 



300. 400. 700. 



Compensating Eye-pieces : 



2 4 8 12 18 



20. 20. 30. 30. 25. 125. 



6 (Micrometer Eye-piece, No. 122) , 31. 



Achromatic Objectives: 



a &2 a* aa B 



12. 12. 40. 27. 30. 121. 



PI D* (Water Immersion) 



20. 75. ,, 95- 



HUYGENIAN Eye-pieces: 



I, 4> 5 > 2I -- 



2 with cross lines and adjustable eye-lens 16. 



3 (Micrometer Eye-piece, No. 120) 18. ^ ^ 



Glass cell for the Plankton-searcher 3.50 



Centring Achromatic Condenser, No. 29 75- 



ENGELMANN'S Micro-spectral Objective, No. 34 160. 



Vertical Illuminator, No. 42 18. 



Revolving Vulcanite Stage, No. 45 25. 



Revolving Nose-piece for 4 objectives, No. 50 ,, 32. 



Tube-slide, No. 52 10. 



6 Objective-slides, No. 53 60. 



Case to hold 6 Objective-slides, No. 55 15- 



Drawing Apparatus, No. 1 1 1 60. 



Drawing-table, No. 114 5 2 - 



Stage Micrometer, No. 118 10. 



Screw Micrometer Eye-piece, No. 125 105. 



Stage Screw-Micrometer, No. 126 120. 



Cover-glass Gauge, No. 129 , 3- 



Rules on plate-glass, No. 132 & 134 9.50 



Fully divided Circle, No. 139 15- g oo 



Carried forward Mk. 2497. 



In the event of a microtome being required as well -we shall be pleased to supply it at the 

 maker's catalogue price (see notice on p, 140). 



