186 



Projection Apparatus and Accessories. 



No. 51068- M U7I 



51073. 1:11. 



51 074. 1 : 4. 



S. (1. 



51.068. Films, 16, 24, 32, 48 m in length, suitable for the cinematograph. Price per metre ' 0. 1. 

 The prices of the individual films vary according to the length. List on application. 



We also supply Cinematographs for spools up to 200 m length of film, estimates 

 for which we will gladly submit. 



Cf. also complete equipment No. 50,867, p. 168. 



Wood Frames for Photographic Enlargements. 



List No. 51,069 51,070 51,071 51,072 



For plates 8x8 8.5x10 9x10.5 9x12 cm 



Suitable for lanterns 50,76850,782, 50,80750,809 and 51,073 

 Price 5s. 5s. 5s. 5s. 



51,073. Photographic Enlarger, Figure, for plates to 9 Xl3 cm, for placing on the optical I 

 bench of the projection lanterns types A and B and the Schuckert type. Price exclusive 

 of lantern or objective 3. 5. 



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5. 



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Q 



B 



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5 1.074. Polarisation Apparatus for objective Demonstration, Figure (W. D., Fig. 305 [293]), i 

 with large column of plates of the finest thin, white plate glass, with 20 mm nicol and 

 with arrangement for clamping preparations 7. 0. 



The apparatus gives very good images, is very simple and convenient, and can be employed 

 with any projection apparatus or with the heliostat. 



Complete description on p. 1212 (sewn in at the end of this list). 

 For further Polarisation Apparatus, see Optics section. 



Cl. 3615, 317. 



