Alidade

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Ingenium, 1985.0671.001
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OBJECT TYPE: TELESCOPIC
DATE: Unknown
ARTIFACT NUMBER: 1985.0671.001

MANUFACTURER: Watts, E.R. & Son
MODEL: Unknown
LOCATION: London, England

More Information

General Information

Serial #: 16099
Part Number: 1
Total Parts: 5
AKA: N/A
Patents: N/A
General Description: Alidade made of brass/glass balance vial and glass-covered trough compass/glass auxiliary level vial/case made from wood/synthetic carrying handle.

Dimensions

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

Length: 34.0 cm
Width: 24.0 cm
Height: 12.5 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Exploration and Survey
Category: Measurement-direction
Sub-Category: N/A

Manufacturer

AKA: Watts
Country: England
State/Province: Unknown
City: London

Context

Country: Unknown
State/Province: Unknown
Period: Unknown
Canada: Unknown
Function: Designed to afford accuracy in the control of the table and especially to make possible the stadia measuring distance.
Technical: Unknown
Area Notes: Unknown

Details

Markings: .1: 'E.R. WATTS & SON./LONDON/ERW & S/No. 16099/INSTRUMENTS LTD./ OTTAWA & TORONTO' incised in base/'GSC 420' incised by hand in base/.3: 'AT Co./USA' appears in raised print on casing/Label inside case bears following info.: 'ENGINEERS'/AND'SURVEYORS'/INSTRUMENTS/AND/SUPPLIES./ERW & S/TRADE MARK/E.R. WATTS & SON, LTD./[illegible] Rd. London, England'/Transcript of markings continuedin Supp. Info.
Missing: Missing telescope/missing secondary pieces.
Finish: Majority of alidade is black/one bakelite balance knob, rest are brass coloured/case is varnished/brown colored synthetic.
Decoration: Mfg's logo design on base.

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

Watts, E.R. & Son, Alidade, Unknown Date, Artifact no. 1985.0671, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/1985.0671.001/

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