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2012.0084.002
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- OBJECT TYPE
- spherometer
- DATE
- 1904–1905
- ARTIFACT NUMBER
- 2012.0084.002
- MANUFACTURER
- NALDER BROS. & CO.
- MODEL
- Unknown
- LOCATION
- Westminster, England
More Information
General Information
- Serial #
- 25085
- Part Number
- 2
- Total Parts
- 4
- AKA
- N/A
- Patents
- N/A
- General Description
- Aluminum (possibly) scale; brass (possibly) base
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 8.6 cm
- Width
- 7.7 cm
- Height
- 4.3 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Astronomy
- Category
- Miscellaneous
- Sub-Category
- N/A
Manufacturer
- AKA
- NALDER
- Country
- England
- State/Province
- Unknown
- City
- Westminster
Context
- Country
- Canada
- State/Province
- Ontario
- Period
- c. 1905-1970
- Canada
-
A precision measuring device used at the Dominion Observatory, Ottawa (c. 1905-1970). This spherometer may have been used on a variety of astronomy, survey or metrology instruments employed there. - Function
-
The micrometer screw wheel screws into the base. Turning the wheel moves the central pin up or down and measurements show on the scale mounted on the base. - Technical
-
Unknown - Area Notes
-
Unknown
Details
- Markings
- On front leg: a scale with 0 in the middle, divisions and the numbers 10 and 20 above it, and the same below/ On the proper left leg: the number "514" scratched into the finish/ On the proper right leg in white letters: "NALDER BROS. & CO./ WESTMINSTER/ No. 25,025"
- Missing
- Appears complete
- Finish
- Overall black finish with brass pins at the ends of the legs.
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
NALDER BROS. & CO., Base, circa 1904–1905, Artifact no. 2012.0084, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/2012.0084.002/
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