Gear

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OBJECT TYPE: PHOTOGRAMMETRIC PLOTTER
DATE: 1968–1970
ARTIFACT NUMBER: 2004.1361.021

MANUFACTURER: Wild Heerbrugg
MODEL: 5:2
LOCATION: Switzerland

More Information

General Information

Serial #: N/A
Part Number: 21
Total Parts: 65
AKA: ratio gear
Patents: N/A
General Description: grey metal

Dimensions

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

Length: N/A
Width: N/A
Height: 1.6 cm
Thickness: N/A
Weight: N/A
Diameter: 3.1 cm
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: Used c. 1970s- 1990s.
Canada: Used at NRCan's Mapping Services Branch in Ottawa, with Wild A8 Autograph.
Function: Used for horizontal component of plotting.
Technical: One of pair of 5:2 ratio reversing gear sets. This pair is one of 7 sets of ratio gears supplied as standard with A8 plotter: sets include inverse transmission (reversing) ratios. Selection of gear (and appropriate glass scale) based on flying height and plotting scale factors: Wild published a set of 4 tables to facilitate this selection and avoid computation errors [manual pp.38-41]. The gears operate between the shafts of the plotter [.1] and drawing table [.7] Received inside standard cabinet [.11] supplied by Wild with each A8 Autograph plotter.
Area Notes: Unknown

Details

Markings: "2:5 [underlined] " stamped in white on hub. Illegible marking crudely painted in blue on hub.
Missing: None.
Finish: Dull silver metal gear; teeth and hub edges are bright silver metal.
Decoration: N/A

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If you choose to share our information about this collection object, please cite:

Wild Heerbrugg, Gear, circa 1968–1970, Artifact no. 2004.1361, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/2004.1361.021/

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