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PRACTICAL PHOTO-MICROGEAPHY 



exactly fulfils the requirements for the most advanced and 

 critical work. The body-tube is of large size, as in the ordinary 

 photo-micrographic stand, to minimise internal reflection and 



to enable Planar and similar long-focus lenses to be used. 

 The stage has mechanical motion, and may be rotated. In 

 metal- work the latter is a point of great importance, as often 

 the direction of incidence of the light in relation to the 



