16 



PRACTICAL PHOTO-MICROGRAPHY 



one piece, and has a well-spread tripod foot which ensures 

 stability when the instrument is in the horizontal position. 



FIG. 5. D.P.H. Microscope. (C. Baker, London.) 



It can be fitted, if required, with centreing sub-stage; and 

 a removable mechanical stage with large range of movement 

 can also be adapted to the instrument. 



