Duoscope
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Ingenium,
1988.1205.001
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- OBJECT TYPE
- ONE BAR
- DATE
- 1940–1949
- ARTIFACT NUMBER
- 1988.1205.001
- MANUFACTURER
- Unknown
- MODEL
- Unknown
- LOCATION
- Unknown
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- METAL/ GLASS/ BOX: WOOD WITH METAL HARDWARE
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 67.0 cm
- Width
- 18.0 cm
- Height
- 21.5 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
- Unknown
- Country
- Unknown
- State/Province
- Unknown
- City
- Unknown
Context
- Country
- Canada
- State/Province
- Unknown
- Period
- C.1940'S
- Canada
-
DEVELOPED BY THE DOMINION FOREST SERVICE OF THE DEPT. OF MINES & RESOURCES IN OTTAWA - Function
-
USED TO 'SUPERIMPOSE' AN AERIAL PHOTO ON TO A MAP IN SUCH A MANNER THAT BOTH HAVE THE SAME HORIZONTAL SCALE. DETAILS FROM THE PHOTO CAN BE TRACED ONTO THE MAP QUICKLY & EASILY. - Technical
-
ALLOWS THE PHOTO TO APPEAR SUPERIMPOSED & PROPERLY ADJUSTED ON A MAP, PERMITTING DIRECT TRANSFER & PREVENTING ERRORS BY MAKING POSSIBLE A SIMULTANEOUS & NATURAL OBSERVATION OF THE PHOTOGRAPH & THE ACTUAL MAP SHEET. THE SIMPLICITY OF THE OPERATION RESULTS IN AN ACCELERATION IN THE RATE OF PLOTTING. - Area Notes
-
Unknown
Details
- Markings
- DECAL ON MIRROR BACK: 'DEPARTMENT OF FORESTRY/ SERIAL NO. 00196'/ PAPERS ATTACHED TO MIRROR BACKS: 'DO NOT TOUCH/ THE/ SURFACE OF THE GLASS'/ SCRATCHED VARIOUS PLACES: 'D-14'/ ADHESIVE TAPE ATTACHED TO BOX: 'PATTERSON'
- Missing
- LENS BRACKET ANDLENSES
- Finish
- METAL PAINTED GLOSS BLACK/ BOX STAINED & VARNISHED
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Unknown Manufacturer, Duoscope, between 1940–1949, Artifact no. 1988.1205, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1988.1205.001/
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