Smithsonian Report. 1935. — Johnson 



PLATE 3 



Counters and aniulifiers. 



2. Multidirectional cosiiiR KIN iiit'ter for simultaneously comparing; intensities in m-x rn /rmih ;irif;le.s and 

 two azimuths. The operation is automatic with readings taken photographically on Uj-inillimeter 

 cinema film. 



