Barograph

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Ingenium, 1987.0527.001
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OBJECT TYPE
MERCURY TUBE/WEIGHT/ELECTRICAL
DATE
1939
ARTIFACT NUMBER
1987.0527.001
MANUFACTURER
DOT Air Services Branch
MODEL
A
LOCATION
Unknown

More Information


General Information

Serial #
N/A
Part Number
1
Total Parts
8
AKA
N/A
Patents
N/A
General Description
GLASS TUBE/ SYNTHETIC PARTS

Dimensions

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

Length
90.8 cm
Width
5.4 cm
Height
N/A
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
COLOURLESS TRANSPARENT GLASS/ BLACK SYNTHETIC
Decoration
N/A

CITE THIS OBJECT

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

DOT Air Services Branch, Barograph, 1939, Artifact no. 1987.0527, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1987.0527.001/

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