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SCIENCE—ADVERTISEMENTS 
| DELINEASCOPE | 
(MODEL 6) 
THE VERY “LAST WORD” 
And Highest Attainment in 
TRANSPARENT, OPAQUE, VERTICAL AND MICROSCOPIC 
PROJECTION 
Change from one kind of projection to another by simply ‘‘turning a button.” No changing 
of position. No turning outfitaround. No inconvenience, No fussing. Nobother. Projec- 
tion of all kinds simplified and perfected. Built along New, Original, Unique, Scientific and 
Convenient lines---In the real SPENCER WAY and offers many superior advantages. 
INCREASED CAPACITY AND GREATER EFFICIENCY 
WITH MORE CONVENIENCE 
CATALOG SOON READY 
SEPTEMBER DELIVERIES 
SPENCER LENS COMPANY 
BUFFALO, NEW YORK 
