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37 
Itek Corporation 
Waltham 54, Massachusetts, U.S.A. 
Representative: Dr. D. Macdonald 
Exhibit 
Literature and photographs. 
Activities and Products 
Itek scientists and engineers are combining the disciplines of optics, 
electronics, photophysics, mathematics, human engineering and informa 
tion sciences to create complex information-handling systems. These 
systems collect, compress, code, index and store graphic or textual 
information for automated retrieval and display. In the field of recon 
naissance, vast numbers of acuity photographs are collected, processed, 
stored, and searched virtually automatically and instantaneously. 
STAND 206 
Students Union 
Malet Street 
First Floor 
Wray (Optical Works) Ltd. STAND 207 
Ashgrove Road, Bromley, Kent Students Union 
Malet Street 
Representative: P. Bull First Floor 
Exhibit 
Wide-angle aerial survey lens 6 in. f/4-5. Designed for the FX 105 camera. 
Range of lenses with focal lengths of 6 in., 12 in., 24 in., 36 in., and 48 in. 
for air reconnaissance. 
Binocular Magnifier in the powers of 10 x and 20 x with measuring scales. 
This instrument has many uses including examination of negatives and 
prints. 
Map-measuring magnifier for detailed inspection of maps and charts with 
self-contained graticule in 1/10th mm. Transparent base allows for 
adequate illumination. 
Photographic lenses for all cameras and technical purposes. 
Activities and Products 
(1) Makers of precision cameras including the Wrayflex 35 mm. eye-level 
reflex and the Peckham-Wray 4x5 technical cameras. 
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Stand 207 —coni. 
(2) Photographic lenses for amateur, professional, and commercial 
photography. 
(3) Lenses for the laboratory including 2 in. f/1 C.R.T. lens and a series 
off/0-71 anastigmats. 
(4) Lenses and optical equipment for the graphic arts, optical systems, and 
instruments designed for special purposes. 
(5) Prism binoculars and prismatic telescopes. 
STAND 209 
Students Union 
Malet Street 
First Floor 
A. J. Haggata 
J. E. Tuchfeld 
L. Jackson 
Williamson Manufacturing Co. Limited 
Hawthorn Road, London N.W.10 
Representatives: J. E. Odle 
I. G. Hunter 
Exhibit 
Williamson Large Scale Plotter, Type L.S.P. Fills the gap between expen 
sive first order machines and those designed primarily for small- and 
medium-scale work. It may be used either for diapositive or positive 
photographic plates and the new design of illumination gives a high 
standard of interpretation. Two projectors each 127-5 focal length and f/27 
fixed focus give a projection depth of focus of 150 mm. The lamp illumina 
tion, which is variable, is concentrated on a small area, mechanical links 
on the tracing table (a modified Williamson Mark 2) ensuring that the 
area illuminated is that under observation by the operator. The plotting 
table has an overall flatness of 0 0001 in. Each projector has BX, TIP, 
TILT and SWING controls operated by extensors attached to the tracing 
table. The Plotter has a field flatness of 0-1 mm. at the optimum projection 
plane. 
F.49, Mark 2 Survey Camera. Has a 6-in. wide-angle survey lens with a 
precision reseau register glass of 1 cm. spaced crosses. This 9 in. sq. format 
camera is in worldwide use for aerial survey and is the standard survey 
camera for the Royal Air Force. An alternative model, the F.49, Mark 3, 
has a 12 in. distortion-free lens. A 250 ft. magazine is now available in 
addition to the standard 165 ft. magazine. 
Williamson-Ross Multiplex Mapping Equipment (Type A.P.U.). A three- 
projector version of the standard seven-projector unit using the same 
high-illumination aspheric condenser-type projectors and with three 
illumination control boxes providing independent control to each projector _ 
from any working position. ^ 
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EXHIBITION GUIDE