Full text: Transactions of the Symposium on Photo Interpretation

The New Casella Book of Photogrammetry Equipment 
Here in one complete catalogue is described the full range 
of Casella instruments for Photogrammetry. Surveyors, 
Geologists, Civil Engineers and others will want this 
equipment for use in the study of aerial photographs, and 
for preparing maps from those photographs. 
All Casella equipment, including a wide range of instru 
ments for meteorology and industry, are backed by a 
world wide chain of thoroughly experienced agents who 
are always available for technical information and after 
sales service. Addresses will be sent on request. Send for 
Catalogue 929/SP. 
The range of instruments 
described includes: 
Pocket Stereoscopes 
Mirror Stereoscopes 
Stereometer or Parallax 
Guidance Mechanism for 
Stereoscope, stereometer and 
lighting unit 
Machine for Slotting Templates 
i. F. CASELLA & CO Ltd. Regent House, Britannia Walk, London, N.1 - Clerkenwell 8581

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