Magnifier

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OBJECT TYPE: PHOTOGRAMMETRIC PLOTTER
DATE: 1968–1970
ARTIFACT NUMBER: 2004.1361.060

MANUFACTURER: Wild Heerbrugg
MODEL: Unknown
LOCATION: Switzerland

More Information

General Information

Serial #: N/A
Part Number: 60
Total Parts: 65
AKA: spotting microscope
Patents: N/A
General Description: predominantly metal; glass optics

Dimensions

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

Length: 2.7 cm
Width: 2.5 cm
Height: 14.0 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: Wild
Country: Switzerland
State/Province: Unknown
City: Unknown

Context

Country: Canada
State/Province: Ontario
Period: presumably used c. 1970s- 1990s.
Canada: Accessory 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 Riyadh, Saudi Arabia. The A8 was on loan to Terra for the duration of the project's digital compilation stage. [Ref. 1]
Function: Allows user to better view fine details on map being plotted.
Technical: Spotting microscope supplied as standard accessory for Wild A8 Autograph, which can be inserted in the drawing point carriage of the plotting table (instead of drawing point or lead holder). The magnifier features a reticule scale divided in tenth-of-millimetres, and yields a non-reversed image. [Ref. 3, p.20]
Area Notes: Unknown

Details

Markings: None evident.
Missing: Appears complete.
Finish: Lower portion of shaft is silver metal; sliding collar and lens housing are darkened metal; clear glass optics.
Decoration: N/A

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Wild Heerbrugg, Magnifier, circa 1968–1970, Artifact no. 2004.1361, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/2004.1361.060/

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