Sextant base

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Ingenium, 1974.0109.001
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OBJECT TYPE: N/A
DATE: Unknown
ARTIFACT NUMBER: 1974.0109.001

MANUFACTURER: PORTER, CARY LTD.
MODEL: Unknown
LOCATION: London, England

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: BRASS/ WOOD

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: N/A
Width: 19.0 cm
Height: 44.5 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: PORTER
Country: England
State/Province: Unknown
City: London

Context

Country: Unknown
State/Province: Unknown
Period: Unknown
Canada: Received from Energy, Mines and Resources, the federal government department responsible for surveys -- topographical, geodetic, etc.
Function: Base for a sextant generall used on land for surveying
Technical: This type of base appeared in the late 18th century with the firms of Ramsden and Troughton. Both these firms made these for their double framed sextants which were the most expensive of those in the 10-12 oinch radius category.
Area Notes: Unknown

Details

Markings: 'HYDROGRAPHIC SURVEY 5' ENGRAVED ON BASE
Missing: From CA of 08/14/1995 by Tony Missio: Undetermined
Finish: MADE OF BRASS/ BASE HAS 3 HINGED LEGS WITH LEVELING SCREWS AT THEIR ENDS/ TOP HAS A HORIZONTAL BAR WITH SWIVEL ATTACHMENT TO ROTATING TABLE ON TOP FOR MOUNTING A SEXTANT/ HAS FITTED AND PADDED WOODEN BOX/ SPIRIT LEVEL IS FIXED TOWARD THE TOP/ GOOD CONDITION, SOME SCRATCHES & PIT MARKS
Decoration: N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

PORTER, CARY LTD., Sextant base, Unknown Date, Artifact no. 1974.0109, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1974.0109.001/

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