182 



Projection Apparatus and Accessories. 



No. 51 OSS 



51038. 1:6. 



51 046. 1 : 8. 



51.038. Apparatus for Projecting Horizontal Objects, Figure, with 2 Condenser Lenses, 

 122 mm diameter, 1 Prism, 70 x 70 mm. and 1 Projection Objective, 55 mm diameter 



This apparatus is specially intended for Model A and B lanterns, but it can be used for all lan- 

 terns. When in use the entire condenser must be removed from the lantern. 



51.039. do., with a glass mirror silvered on the front, in lieu of the prism 



51.040. Reflecting Prism for erecting the images of apparatus which are placed in front of the 

 lantern (W. D., Fig. 52 [47]), 45x45 mm, suitable for Projection Lanterns with 42 mm 

 diameter objective 



51.041. - - do., larger, 60x60 mm, suitable for Projection Lanterns with 54 mm diameter 

 objectives 



51.042. - - do., 70x70 mm, suitable for Projection Lanterns with 60 mm diameter objectives 



51.043. Reflecting Prism in rotatory mount, suitable both for erecting pictures of apparatus 

 and as a reflecting prism for the Horizontal Projector, 60 x 60 mm, for Projection 

 Lanterns with objective to 60 mm diameter 



51.045. Megascope for Projecting opaque objects, Figure, simple design 



This apparatus is used for introducing wood cuts from text books, photographs, drawings, the 

 inside of a watch, etc. The front condenser lens of the skiopticon is removed when this apparatus 

 is employed, by screwing off the ring of the mount. 



51.046. Megascope for Projecting opaque objects, Figure, large Model, with illuminating 

 lens, illuminating mirror, achromatic Objective and erecting mirror silvered on the 

 front 



For projecting wood cuts from text books, photographs, the inside of a watch, etc. 



The apparatus is set up in front of the projection lantern after removing the condenser. The 

 light passes through the large lens on to the illuminating mirror, being thence projected on the opaque 

 object, which is laid upon the bottom of the apparatus. The objective and plane mirror above cast 



s. d. 

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1.15. 

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Cl. 273, 



3281, 3926. 



