Heliotrope

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Ingenium, 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/id/1977.0234.001/

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