Renseignements généraux

Nº de série

1943535

Nº de partie

10

Nombre total de parties

65

Ou

S/O

Brevets

S/O

Description générale

metal and synthetic materials of construction

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

20,0 cm

Largeur

9,0 cm

Hauteur

9,3 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Exploration et levé

Catégorie

Photogrammétrie

Sous-catégorie

S/O

Fabricant

Ou

Ghielmetti

Pays

Switzerland

État/province

Inconnu

Ville

Solothurn

Contexte

Pays

Canada

État/province

Ontario

Période

Unknown; not used after early 1990s.

Canada

Accessory/part for plotter used in Canada's national mapping program c. 1960s-early 1990s, and is 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 machine 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 Riyad, Saudi Arabia. The A8 was on loan to Terra for the duration of the project's digital compilation stage. [Ref. 1]

Fonction

To control drawing point lift on plotting table.

Technique

Believed to be original foot pedal control for A8 plotter, used to control the drawing point lift [located on the plotting table]. The drawing point is lowered when the pedal mechanism is depressed then released; raised again when the pedal is depressed a released a second time. The point is lowered as long as the pedal is depressed, and raised when the pedal is released. [Ref. 4, p. 20] Pedal can be locked in depressed position by means of toothed wheel on casing.

Notes sur la région

Inconnu

Détails

Marques

Metal plate fixed to casing reads "GHIELMETTI/ SOLOTHURN/ [logo]/ SCHWEIZ SWITZERLAND SUISSE/ A 10/ V 500/ f 50/ ~W~ [blank]/ f [blank]/ No 1943535/ P0B 1/ [A/ SE logo]". 3 symbols/logos appear in raised print on plug casing.

Manque

Appears complete.

Fini

Metal frame painted drab green; metal wire connecting cable has flexible silver metal covering; black synthetic plug has 2 silver metal prongs; black synthetic diamond-patterned covering on underside of foot pedal, and on upper front surface of foot rest.

Décoration

S/O