General Information

Serial #

2894

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

METAL BASE/ METAL FRAME & PARTS/ GLASS TUBES CONTAINING MERCURY/ RUBBER HOSE/ SYNTHETIC PARTS & POWER CORDS

Dimensions

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

Length

45.7 cm

Width

45.5 cm

Height

105.0 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

HASS

Country

United States of America

State/Province

District of Columbia

City

Washington

Context

Country

Canada

State/Province

Ontario

Period

1970S +

Canada

INSTRUMENT USED AS STANDARD TO CALIBRATE MERCURY BAROMETERS BY METEOROLOGICAL SERVICE OF CANADA.

Function

GENERALLY, INSTRUMENT THAT MEASURES ATMOSPHERIC PRESSURE BY MEANS OF ITS EFFECT ON COLUMN OF MERCURY. THIS COMBINATION PRIMARY-SECONDARY BAROMETER WAS USED TO CALIBRATE MERCURY BAROMETERS IN METEOROLOGICAL INSTRUMENT LABORATORY.

Technical

INSTRUMENT WHICH FUNCTIONED AS BOTH PRIMARY & SECONDARY STANDARD FOR USE IN CALIBRATION LABORATORY. PRIMARY STANDARDUSED TRUE INCH SCALE GRADUATIONS & CISTERN MICROMETER. SECONDARY STANDARD WAS NON-ADJUSTABLE CISTERN BAROMETER.

Area Notes

Unknown

Details

Markings

PLATE ON BASE READING "PRI-SEC BAROMETER/ MODEL NO. MARK II/ RANGE: 0-31 IN. HG./ SERIAL NO. 2894/ MFD. UNDER ONE OR MORE OF THE FOLLOWING/ U.S. PATENTS: 2,542,671; 2,570,943; 2,882,520/ HASS INSTRUMENT CORP./ WASHINGTON D.C. - MADE IN U.S.A." WITH HASS LOGO/ LABEL ON BASE READING "GOVERNMENT OF CANADA/ METEOROLOGICAL BRANCH/ INSTRUMENT DIVISION/ CALIBRATION UNIT/ 016-080 2894/ DEPARTMENT OF TRANSPORT"/ LABEL ON INSTRUMENT READING "GOVERNMENT OF CANADA/ METEOROLOGICAL BRANCH/ INSTRUMENT DIVISION/ CALIBRATION UNIT/ 016-080A/ DEPARTMENT OF TRANSPORT"

Missing

UNKNOWN From CA of 04/28/2004 by Sue Warren: No - Complete

Finish

GREY PAINTED BASE & PARTS/ PLATED FRAME & PARTS/ COLOURLESS TRANSPARENT GLASS/ BLACK RUBBER & SYNTHETIC/ WHITE SYNTHETIC SCALES

Decoration

N/A