Bracket, lens
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1988.1216.001
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- OBJECT TYPE
- SEELYSCOPE/DUOSCOPE/4 LENS
- DATE
- 1940–1949
- ARTIFACT NUMBER
- 1988.1216.001
- MANUFACTURER
- SPEAR, G.
- MODEL
- Unknown
- LOCATION
- Ottawa, Ontario, Canada
More Information
General Information
- Serial #
- PROTOTYPE
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- METAL/ TAPE
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 12.0 cm
- Width
- 5.8 cm
- Height
- 5.0 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
- SPEAR
- Country
- Canada
- State/Province
- Ontario
- City
- Ottawa
Context
- Country
- Canada
- State/Province
- Ontario
- Period
- PROBABLY 1940'S & 1950'S
- Canada
-
MADE & DEVELOPED BY G.A. SPEAR OF THE DOMINION FORESTRY SERVICE OF CANADA. IT WAS PART OF THE DEVELOPMENT OF THE DUOSCOPE & SEELYSCOPE DONE BY THE SERVICE. - Function
-
IS THE PART OF A DUOSCOPE OR SEELYSCOPE WHICH HOLDS THE LENSES. THE LENSES ARE USED TO CONVERT AN AERIAL PHOTO TO THE SAME HORIZONTAL SCALE AS THE MAP IN USE. THIS CONVERSION ENABLES THE USER TO TRACE DETAILS FROM THE PHOTO TO THE MAP. - Technical
-
Unknown - Area Notes
-
Unknown
Details
- Markings
- SCRATCHED ON: 'B-11/ Lens Bracket/ A.S.D.'
- Missing
- N/A
- Finish
- Unknown
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
SPEAR, G., Bracket, lens, between 1940–1949, Artifact no. 1988.1216, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1988.1216.001/
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