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PRICES OF LEITZ'S UNIVERSAL PROJECTION APPARATUS (The Epidioscope). 

 (See page No. 220 for illustration). 



1077' No. i. For episcopic and diascopie projection : Automatic projection lamp for 

 a 30 ampere current, casing with arrangement for centring the lamp, frame 

 with hinged optical bench, large rising and falling episcopic stage, externally 

 silvered mirror, cooling chamber on stand, triple adjustable condenser of 210 

 millimetres diameter, radial arm for the projection lens of 400 millimetres 

 focus, rods with curtains, universal rapid changer with clamp for attachment 

 to the cooling chamber, and lens holder for the lantern slide projection lens 50 



1078 1 Arrangement for the projection of horizontally placed objects, consisting of 

 a gear for raising and lowering the lamp with condensing lenses, mirror, 

 circular opening in the large stage with condensing lens . . . . 5 



// desired the apparatus may be supplied without this arrangement. 







1079' No. 2. For micro-projection : Small optical bench with large movable stage, 

 revolving condenser changer, iris-diaphragm and lens, tube stand, with rack 

 and pinion movement and micrometer screw, triple nosepiece, large tube with 

 iris-diaphragm, triple, revolving eyepiece changer, with three projection eye- 

 pieces. (Tin's arrangement renders a separate lens carrier for the projection 

 of lantern slides unnecessary, since the lens may be attached to the tube 







standl 



12 10 



1080' Uncemented j-lens projection objective F/4 of 400 millimetres focus, corrected 



spherically and astigmatically . . . . . . . . . . . . 20 



1081 ' Aplanatic Projection Lens of 200 millimetres focus, for lantern slides 

 1077-1081 Complete outfit as described above 



300 



1082' Apparatus for the projection of spectra, consisting of a small optical bench with slit, lens, 

 and fluid prism 



1083' Rheostat for a continuous current of no volts 



(The price of the rheostat varies according to the voltage.) 



1084' Packing for complete outfit 



1085' Resilvering of the reversing mirror G 



1086' Cored Carbons for the projection lamp 



90 10 



12 10 

 480 



200 

 060 

 per pair 004 



We guarantee the proper working of the lamp only when these carefully selected carbons are used. The- 

 prices of objectives and microsummars will be found on pages No. 216-217. 



1087 T Leitz's Small Epidioscope for the projection of opaque objects and lantern slides, complete 50 



1088 r Microscope Attachment for ditto 



Leitz's Catalogue of Projection and Projection-Drawing Apparatus, giving a detailed description of above, as 

 well as other cheaper models, sent post free. 



900 



ICHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



