0 
15 
A ZEISS (Oberkochen) Planimat, connected on-line to a P.D.P 
11/45 computer, supported by a full range of peripherals. Con- 
nected also to the P.D.P. 11/45 is a TRAK Digitizing Table; 
DEC, EG 11 refresh display screen (for inter active editing) 
and INFORMER CRT's (for operator control and prompting of fea- 
ture codes). 
Data output is achieved by use of a XYNETICS Model 1100 automa - 
tic drafting table controlled by a Hewlett-Packard 2100. 
The system developed is described in some detail in a paper en- 
titled "Digital Mapping and its Benefits to a Highway Authori- 
ty" (M. K. Hill) presented at the New Zealand Roading Symposium 
1975. 
In order to make the fullest use of the ground models produced 
by the system, the Department has purchased the MOSS ground mo- 
delling and civil engineering design system from the MOSS Con- 
sortium (U.K.). 
The leaders of the relevant technical teams in the Highways De- 
partment and in the Department of Main Roads (New South Wales) 
have exchanged visits and maintain liaison on such matters as 
software development. 
Main Roads Department, Western Australia 
  
At the request of the Main Roads Department of Western Australia, 
the Lands and Surveys Department of Western Australia produce the 
following work: 
- Large scale photogrammetric plots at 1:1 000 and 1:2 000 sca- 
les. (Smaller scales are photographically reduced by the MRD 
when required.) 
- Contoured Orthophotos at 1:5 000 for location purposes. 
- Small scale black-and-white aerial photos for location purpo- 
ses. 
- Small scale coloured aerial photos for Environmental Investi- 
gation Studies. 
while no photogrammetric work is carried out directly by the Main 
Roads Department. 
Public Works Department, Tasmania 
  
As in most other States, photogrammetric services are provided 
to the Public Works Department by the State Lands Department. It 
may be noted that, in this case, the P.W.D. insists on a coordi- 
nate system based on a series of 20 Transverse Mercator Zones 
(similar to the system adopted generally for large-scale mapping 
and project work in New South Wales) whereas all other mapping 
in Tasmania is based on the Australian Map Grid, of 69 Transverse 
Mercator Zones.