National Geographic : 1944 Aug
Cutaway view of the Argus "Spotting" Scope which is now as well known for military use as it formerly was among sporting riflemen . . . From the big objective lens thru. the fine prisms to the eyepiece, the rays of light are speeded to the eye with a maximum of brilliance and clarity . . . This same fine precision work will again make Argus Cam eras leaders in their field. ARGUS, INCORPORATED * ANN ARBOR, MICH.