General Information

Serial #

N/A

Part Number

2

Total Parts

65

AKA

N/A

Patents

N/A

General Description

metal and synthetic materials of construction.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

26.7 cm

Width

9.0 cm

Height

9.1 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Exploration and Survey

Category

Photogrammetry

Sub-Category

N/A

Manufacturer

AKA

Unknown

Country

Unknown

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Ontario

Period

Unknown; not used after early 1990s.

Canada

Believed to be a component of A8 plotter used in Canada's national mapping program c. late 1960s-early 1990s, and an example of the last analogue plotting devices used by the Topographic Service of Canada. With the exception of the Wild A10 [few of which were used in Canada], this machine was the most sophisticated plotter available before digital technology. This plotter was converted c. 1995-96 to digitize the motions (X,Y & Z) with the addition of encoders and a control pad which interfaced to a computer. The Kern encoders and control module were installed by Terra Surveys of Ottawa when they rented this machine for the MOM project, completing the large scale mapping of Riyadh, Saudi Arabia. The A8 was on loan to Terra for the duration of the project's digital compilation stage. [Ref. 1]

Function

To control contact of marking medium in tracing stand with film or paper.

Technical

This foot pedal received with, but is not original to, plotter.

Area Notes

Unknown

Details

Markings

No markings evident.

Missing

Complete. NB: This foot pedal not original to plotter.

Finish

Metal frame painted black; metal wire connecting cable has grey synthetic covering; silver metal fittings on cord; black synthetic diamond-patterned covering on foot pedal face.

Decoration

N/A