GREAT BRITAIN 5
machine, the analytical method is on the whole preferred,
using film photography taken with a reseau (6, 7, 9); and
a new self-recording stereocomparator is being developed,
allied to an electronic computing system fed from the
comparator with data on punched cards.
There are also new developments of cameras and lenses
specifically for aerial survey work.
At the same time, there is a continuing use of
graphical methods and simple, inexpensive equipment, such
as the slotted template and the Grant Air Survey Projector.
For many tasks, especially in undeveloped areas, these
methods are found to produce satisfactory results with
economy in capital outlay and in operation.
The Ministry of Supply has placed contracts for, or
has sponsored development in Industry of improved sensitised
materials, more efficient processing equipment, and a
stabilised mounting for the aerial camera. Reseau register
glasses have been introduced for all survey cameras. A
‘•flatness gauging apparatus” has been developed (in con
junction with the National physical Laboratory) for testing
the relative flatness of coated and uncoated glass plates
for use in cameras and in photogramnetrie plotters. The
device is based on the principle of "pneumatic gauging” and
will measure to a few microns the departure of any part of
the surface of a coated plate from a mean, perfectly flat
plane.
4. TECHNICAL EDUCATION AND RESEARCH
(education TECHNIQUE ET~RECRERCHES)
(TECIiNISCHE ERZIEHUNG UND UNTERSUCHUNG)
Photogrammetry is taught in several Universities and
Colleges as part of a wide course in Surveying.
The Department of Civil and Municipal Engineering of
University College, London, has set up a regular Diploma
Course in Photogrammetry, under Professor E. H. Thompson,
and since 1953/54 some 30 students have completed or are
following the Course. Equipment includes Williamson-Ross
Multiplex, Wild a4, A5 and a6, Santoni III and 2eiss C5»
It is hoped soon to establish a Course in photpgrammetry
leading to a M.Sc. degree, open to students having a
