Various Optical and Meehanieal 
Apparatus. 
No. 
55 
Fig. 43. 
Stereoscopic Eye-piece. 
^'Stereoscopic Eye-piece after abbe, for stereoscopic and 
indifferent binocular observation of microscopical objects witli any 
degree of high magnification (Carl's Repertorium d. Experimental- 
Marlcs 
ma. 
