Heliotrope
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1977.0234.001
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- OBJECT TYPE
- N/A
- DATE
- Unknown
- ARTIFACT NUMBER
- 1977.0234.001
- MANUFACTURER
- Bausch & Lomb
- MODEL
- Unknown
- LOCATION
- Rochester, New York, United States of America
More Information
General Information
- Serial #
- 8341
- Part Number
- 1
- Total Parts
- 3
- AKA
- N/A
- Patents
- N/A
- General Description
- BRASS
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 7.5 cm
- Width
- 5.5 cm
- Height
- 3.0 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Exploration and Survey
- Category
- Survey equipment
- Sub-Category
- N/A
Manufacturer
- AKA
- Bausch Lomb
- Country
- United States of America
- State/Province
- New York
- City
- Rochester
Context
- Country
- Unknown
- State/Province
- Unknown
- Period
- Unknown
- Canada
-
Unknown - Function
-
To provide a luminous signal for observation between distant points during trigonomical surveys. The signal is sighted by a theodolite and the angle between the established points measured, in order to determine distance. - Technical
-
Essentially a plane mirror mounted on a tripod and turned by means of a slow motion screw to follow the sun and cast the beam in a constant direction. Under ideal conditions the beam may be observed at a range of 100 miles. - Area Notes
-
Unknown
Details
- Markings
- Bears mark 'G.S.C.3' incised on base.
- Missing
- N/A
- Finish
- Reflective silver-coloured mirror mounted on a black, round frame.
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Bausch & Lomb, Heliotrope, Unknown Date, Artifact no. 1977.0234, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/1977.0234.001/
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