ITALY
GENERAL DIRECTION OF CADASTRAL SURVEY AND OF THE TECHNICAL SERVICES OF
FINANCE DEPARTMENT
Technical and special Maps obtained by re-elaboration
of the Photogrammetric Cadastral Survey in Italy
Communication of Dr. Eng. P. BELFIORE
Chief Engineer of the Italian Cadastral Survey
The General Direction of Italian Cadastral Surveys (Department of Trea-
sure - Italy) can dispose - to the end of 1952 - of about a million hectares of
cadastral surveys, formed by using air photogrammetric high precision method.
The plotting of pairs was usually made on the scale of 1:2.000; contour
lines normal interval, is of 2 m.; over 10.000 sheets of cadastral maps, 1.00 x
0.75 m. each, are now completed and published.
Towns and zones of greatest interest have been plotted at 1:1.000 or 1:
500 scales, with a dense and exact analytical or drawn altimetric detail.
Since 1948 the Italian Cadastral Service has although successfully expe-
rienced the use of air photogrammetric strips and of plotted sheets for the re-
elaboration of some specimen of the «Carta Tecnica d'Italia all 1 : 2.000»
(Italian Technical Map at 1:2.000 of scale), having a complete morfologic
and altimetric detail and 2 m. countour lines interval.
The projection system has been first tranformed, passing from Cassini-
Soldner cadastral pluri-centric co-ordinates to Gauss-Boaga projection ones,
6? wide fuse referred to, and Greenwich's attach.
A perfect relationship with Military Geographical Institute maps, on 1:
25.000 scale, was also established dividing a sheet of the military maps in 48
quadrangles, of 37,5" in latitude and 1',15" in longitude, each one of which is
easily represented on a normal cadastral sheet of 1.00 x 0.75 m. —— on : 2.000
map scale.
Topographic and agricultural particulars - as well as cadastral ones -
have been transferred on the new map sheets of the «Carta Tecnica d'Italia».
Details having only cadastral interest were removed; their substitution
was carried out including instead accurate technical and cartographic ele-
ments, as real wideness of main roads, analytical indication of the angle of
tilt and of planimetric extremities for single grade lines, telegraph and phone
alinements, canals, power transmission lines, pipe lines, etc.
