Duoscope
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Ingenium,
1988.1209.001
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- OBJECT TYPE
- DOUBLE BAR
- DATE
- 1940
- ARTIFACT NUMBER
- 1988.1209.001
- MANUFACTURER
- Unknown
- MODEL
- Unknown
- LOCATION
- Unknown
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 8
- AKA
- N/A
- Patents
- N/A
- General Description
- METAL/ CASE: WOOD WITH METAL HARDWARE, LEATHER HANDLE, & FELT PADDING
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 25.5 cm
- Width
- 10.0 cm
- Height
- 7.5 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
- PROBABLY 1940'S
- Canada
-
DEVELOPED BY THE DOMINION FOREST SERVICE OF THE DEPT. OF MINES & RESOURCES, IN OTTAWA. FURTHER DEVELOPMENT GAVE RISE TO THE SEELYSCOPE BUT NONE OF THE DEVICES WERE WIDELY USED OUTSIDE CANADA OR CONTINUED IN USE. - 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 ON TO THE MAP QUICKLY & EASILY. - Technical
-
ALLOWS A PHOTO TO APPEAR SUPERIMPOSED & PROPERLY ADJUSTED ON A MAP, PERMITTING DIRECT TRANSFER & PREVENTINGERRORS BY MAKING POSSIBLE A SIMULTANEOUS & NATURAL OBSERVATION OF THE PHOTO & THE ACTUAL MAP SHEET. THE SIMPLICITY OF THE OPERATION RESULTS IN AN ACCELERATION IN THE RATE OF PLOTTING. - Area Notes
-
Unknown
Details
- Markings
- SCRATCHED ON: 'D-3'/ HANDWRITTEN ON CASE: 'D-3'
- Missing
- 2 BARS; LENS BRACKET & LENSES
- Finish
- BLACK WRINKLE FINISH/ CASE: PAINTED GLOSS BLACK; BLACK HANDLE; GREEN FELT
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Unknown Manufacturer, Duoscope, circa 1940, Artifact no. 1988.1209, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/1988.1209.001/
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