Barometer

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Ingenium, 1987.0546.001
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OBJECT TYPE: MERCURY/ABRAHAM-FORTIN/MB & INCHES/ADJUSTABLE CISTERN/STANDARD
DATE: 1940
ARTIFACT NUMBER: 1987.0546.001

MANUFACTURER: Casella
MODEL: Unknown
LOCATION: London, England

More Information

General Information

Serial #: 3362
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: METAL CASING & TUBE, PARTS/ GLASS TUBES/ MERCURY

Dimensions

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

Length: 8.7 cm
Width: 5.5 cm
Height: 107.0 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Meteorology
Category: Atmospheric pressure measurement
Sub-Category: N/A

Manufacturer

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

Context

Country: Canada
State/Province: Ontario
Period: AT LEAST FROM 1941 TO 1956, & POSSIBLY INTO 1960'S.
Canada: SERVED AS STANDARD BAROMETER IN THE CANADIAN METEOROLOGICAL SERVICE TORONTO OBSERVATORY, & IS POSSIBLY INSTRUMENT USED FOR COMPARISONS WITH PATTERSON-MIDDLETON WEIGHT BAROGRAPH (870527) IN 1941.
Function: AN INSTRUMENT THAT MEASURES ATMOSPHERIC PRESSURE THROUGH ITS EFFECT ON A COLUMN OF MERCURY.
Technical: THIS REPRESENTS A RADICALLY NEW BAROMETER DESIGN PATENTED BY ABRAHAM IN 1937. IT HAS FORTIN TYPE ADJUSTABLE CISTERN & STAINLESS STEEL POINT IN SIDE TUBE. POINT IS ILLUMINATED BY WINDOW IN SIDE TUBE & VIEWEDBY EYEPIECE. BAROMETER WAS INTENDED TO PROVIDE HIGH ACCURACY WHILE REMAINING EASY TO SET.
Area Notes: Unknown

Details

Markings: Incised black lettering on scale and vernier reading 'CASELLA/ LONDON', '3362', & 'MADE IN ENGLAND', for 87 to 111 & 26 to 32/incised black lettering on thermometer mount for -20 to +120 F. & 270 to 320 absolute.
Missing: From CA of 11/03/1993 by Tony Missio: No - Complete
Finish: BLACK ENAMEL, MOTTLED GREEN, AND BRUSHED METAL CASING/ BRASS COLOURED PARTS/ CLEAR COLOURLESS GLASS.
Decoration: N/A

CITE THIS OBJECT

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

Casella, Barometer, circa 1940, Artifact no. 1987.0546, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1987.0546.001/

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