ut for 
3 WOr- 
ig the 
8) are 
NOW- 
(RTS. 
world. 
| Con- 
nplete 
1. 
1labo- 
aerial 
gram- 
iseless 
Presi- 
rposes 
blems 
cheme 
ubject 
eneral 
nd to 
ply to 
rteurs 
reani- 
within 
luring 
)59. 
The Commission Presidency trusts on the profitable collaboration of National 
rapporteurs for dispatching the questionnaire and collecting data. 
In order to make easier this work, we herewith enclose five reprints of the que- 
stionnaire. 
Yours very truly 
THE PRESIDENT 
(Prof. G. CASSINIS) 
Milano, November 16th, 1959 
QUESTIONNAIRE 
First part 
1. — GENERAL INFORMATION 
1.1 — Which organism in your Country has performed aerial triangulation? 
Organisms depending on publie Corporations 
Organisms depending on private Agencies 
1.2.  — For which purpose are they applying aerial triangulation? 
For cartographie purpose: 
large scale map 
medium scale map 
small scale map 
(Would you point out for every type of map the aerea in km?) 
For study purpose 
1.3. — The use of aerial triangulation is it increasing, or stationary or still at the 
study phase? 
1.4. — Aerial triangulation future plans. 
Second part 
| 
DETAILED INFORMATION ON ORGANIZING WORK 
Triangulation is performed per strips (point out total number and km) 
per blocks (point out total number and km?) 
to 
- 
| 
TRIANGULATION PER STRIPS 
with the instrumental method (n. & km) 
with the analytical method (n. & km) 
with the radial method (n. & km) 
2.1.1. — Triangulated strips with the instrumental method 
Characteristics of flight 
Cameras used 
Photographie material 
Camera calibration and its precision 
Number, characteristics and position of ground points 
Auxiliary equipments used in flight