160 



Eye-pieces with enlarged field of view . 



for special purposes 



Eye-piece cross-line micrometer 



micrometer 



screw-micrometer .... 



Field, Visible area of object in ... 

 Finder appliances on mechanical stages 



MALTWOOD'S 



Focal depth 



Folding lenses 



Gas lamp, incandescent 



Glass cell for the Plankton-searcher 



Glass flask with stand 



Goniometer eye-pieces 



GREENOUGH's stand . 



General 

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 page 



106 



Haemacytometer 



Hand-microscope 



Hand-saccharimeter 



Hand-spectroscope 



Handle with ring for magnifiers 



Heating stage 



HUYGENIAN eye-pieces 



Illuminating apparatus, ABBE'S 



,, for monochromatic light 



simplified 



Illumination by incandescent lamps 



Illuminator for small stands 



Immersion fluid 



Index eye-pieces 



Iris-cylinder diaphragms 



Iris-diaphragms 



Adjustable, with eye-piece 



Leather travelling cases . 



Lens-holders 



Magnification 



Initial magnification of objectives 



Eye-piece magnification 



Tables of 



for achromatic objectives with HUYGENIAN eye-pieces 



apochrom. objectives with compensating eye-pieces 



pairs of objectives on binocular stands .... 



,, the higher powers of achromatic objectives with 



compensating eye-pieces 



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109 

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10 



38, 39 

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32 

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37, 76 



35 



4 



108 



28, 34 



29 



103 



85 

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8 

 11 



20 

 13 

 21 



21 



Special 



Price-List 



page 



137 

 133 

 130 



139 



12 I 



I 3 8 

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 128 



133 

 128 

 I 3 8 

 I 3 8 

 122 



139 

 I2O 



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137 



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