Alidade
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1974.0155.001
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- OBJECT TYPE
- Telescopic
- DATE
- 1906
- ARTIFACT NUMBER
- 1974.0155.001
- MANUFACTURER
- Gurley, W. & L.E.
- MODEL
- Unknown
- LOCATION
- Troy, New York, United States of America
More Information
General Information
- Serial #
- 21264
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- Brass/ Wooden case with brass fittings and locks, and leather handles.
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 48.3 cm
- Width
- 22.9 cm
- Height
- 15.2 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Exploration and Survey
- Category
- Measurement-direction
- Sub-Category
- N/A
Manufacturer
- AKA
- Gurley
- Country
- United States of America
- State/Province
- New York
- City
- Troy
Context
- Country
- Unknown
- State/Province
- Unknown
- Period
- Unknown
- Canada
-
Used by Canadian Topographical Survey. - Function
-
Allows the operator to sight a distant object and use the line of sight to either draw a line in the direction of the object or to measure the angle to the object from a specific point of reference. This device is usually used in conjunction with a plane table and is used to plot a point on a map or to create a map. - Technical
-
Sophisticated 19th century survey equipment used with a plane table to lay out plans for farms, town lots etc. The design allowed rapid and reasonably accurate surveys to be performed. - Area Notes
-
Unknown
Details
- Markings
- Mfr. Information: 'Beaman Stadia Arc No.3047/ Patented Mar. 27, 1906/ W.& L.E. Gurley, Troy, N.Y.' ; 'W. & L.E. GURLEY/ TROY, N.Y./ 21264' Bears mark: 'T.S. 1478'
- Missing
- None apparent
- Finish
- Operable. Black paint once covered the brass, but most has been worn off.
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Gurley, W. & L.E., Alidade, before 1906, Artifact no. 1974.0155, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/1974.0155.001/
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