Barograph part

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Ingenium, 1987.0527.003
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OBJECT TYPE: N/A
DATE: 1939
ARTIFACT NUMBER: 1987.0527.003

MANUFACTURER: DOT Air Services Branch
MODEL: Unknown
LOCATION: Unknown

More Information

General Information

Serial #: N/A
Part Number: 3
Total Parts: 8
AKA: N/A
Patents: N/A
General Description: METAL

Dimensions

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

Length: 41.3 cm
Width: 30.5 cm
Height: 7.2 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: MSC
Country: Unknown
State/Province: Unknown
City: Unknown

Context

Country: Canada
State/Province: Ontario
Period: c. 1939 +
Canada: AN UNIQUE BAROGRAPH DESIGNED & BUILT BY THE CANADIAN METEOROLOGICAL SERVICE, USED AS A STANDARD BAROMETER AT THE TORONTO OBSERVATORY.
Function: AN INSTRUMENT THAT MEASURES ATMOSPHERIC PRESSURE BY MEANS OF ITS EFFECT ON THE WEIGHT OF A COLUMN OF MERCURY IN A TUBE, & RECORDS THE OBSERVATIONS ON PAPER.
Technical: PARTS OF THE MERCURY TUBE ROLLING WEIGHT BAROGRAPH DESIGNED BY PATTERSON & MIDDLETON OF M.S.C., WHICH REPLACED THE KEW BAROGRAPH IN USE SINCE 1887. A COLUMN OF MERCURY IS WEIGHED ON A BALANCE SCALE RATHER THAN ITS HEIGHT MEASURED, THE PRESSURE OF THE AIR ON THE TUBE TOP ACTING UPON THE BEAM OF THE BALANCE.
Area Notes: Unknown

Details

Markings: N/A
Missing: From CA of 10/29/1993 by Tony Missio: Undetermined
Finish: METALLIC
Decoration: N/A

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DOT Air Services Branch, Barograph part, circa 1939, Artifact no. 1987.0527, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1987.0527.003/

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