at the 
^ar period. 
10 560. 
d at 
rage of the 
ble; itis 
eparate 
ry flat 
machine 
report. 
rity of the 
| ft interval 
ding flight 
red for 
raphical 
mercial 
ut the 
rcraft, 
vork. 
ee 
. wide 
tts, 
ruments 
lents are 
s carried 
servations 
omputer 
osequently 
ch company 
includes 
z table, an 
UK the 
öhway 
nd land 
0 for the 
TOPOGRAPHIC INTERNATIONAL LTD 
This company was formed in 1968 and now has its offices at Weybridge, 
Surrey. It offers a full range of survey services particularly for large scale 
mapping, motorway alignment and volumetric and area determinations. Much 
of its work involves the use of photogrammetry. Its equipment includes a 
Zeiss Stereometrograph and a Wild B8. There are five experienced photo- 
grammetrists on the staff. During the past four years it has been involved in 
350 photogrammetric projects including 1:500 plots of 1our towns and 200 miles 
of road survey at various scales from 1:500 to 1:1250.