Planimeter, dot reading
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1988.1133.001
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- OBJECT TYPE
- N/A
- DATE
- 1945–1949
- ARTIFACT NUMBER
- 1988.1133.001
- MANUFACTURER
- Unknown
- MODEL
- ROBINSON
- LOCATION
- Unknown
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 3
- AKA
- N/A
- Patents
- N/A
- General Description
- WOOD CASE WITH METAL HARDWARE/ GLASS MIRROR/ SYNTHETIC TOP
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 46.0 cm
- Width
- 22.5 cm
- Height
- 22.5 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Forestry
- Category
- Silviculture
- 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 AIR SURVEYS DIVISION OF THE DOMINION OF CANADA FOREST SERVICE, DEPT. OF MINES & RESOURCES, OTTAWA - Function
-
USED TO ESTIMATE THE PERCENTAGE OF TREE CROWN COVER IN FOREST STANDS AS DETERMINED FROM THE GROUND. - Technical
-
A DEVICE DEVELOPED TO MEASURE THE DEGREE OF CROWN COVER FROM THE GROUNDWHICH CAN BE CORRELATED WITH THE MEASURABLE FACTORS OF AIR PHOTOS TO DETERMINE THE VOLUME OF THE STAND/ IT IS SMPLE TO USE & SUBJECT TO LESS PESONAL BIAS THAN ANY PREVIOUSLY USED METHODS FOR DETERMINING PERCENTAGE CROWN COVER. - Area Notes
-
Unknown
Details
- Markings
- .1 - STAMPED: `D.F.S./D.F.S.' SCRATCHED: `D.F.S', `0' TO `7' WRITTEN ON GRID/.2 - SCRATCHED: `FFB/ 4'/ HANDWRITTEN: `FBM'/.3 SCRATCHED: `D.F.S'/ `0' TO `9' WRITTEN ON GRID
- Missing
- .3 DOES NOT HAVE A HANDLE ATTACHED
- Finish
- VARNISHED WOOD
- Decoration
- NONE
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Unknown Manufacturer, Planimeter, dot reading, circa 1945–1949, Artifact no. 1988.1133, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/1988.1133.001/
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