General Information

Serial #

561

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

METAL, INCLUDING ALUMINUM/ SYNTHETIC PARTS/ PLEXIGLASS

Dimensions

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

Length

66.1 cm

Width

32.5 cm

Height

68.3 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Meteorology

Category

Surface wind speed & direction measurement

Sub-Category

N/A

Manufacturer

AKA

MSC

Country

Canada

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Unknown

Period

MID 1960'S+

Canada

THE THREE-CUP ANENOMETER WAS DESIGNED BY CANADIAN METEOROLOGIST JOHN PATTERSON OF THE CANADIAN METEOROLOGICAL SERVICE IN THE 1920'S; SUCCESSIVE VERSIONS OF THIS CANADIAN ANENOMETER WERE USED BY THE CANADIAN SERVICE FOR DECADES.

Function

AN INSTRUMENT THAT MEASURES WIND SPEED & DIRECTION BY MEANS OF A CUPWHEEL & WINDVANE RESPECTIVELY, WITH THE READINGS RECORDED BY A SEPARATE ANEMOGRAPH & INDICATED ON A FLASHING LIGHT INDICATOR

Technical

AN EXAMPLE OF THE 1960'S VERSION OF THE TYPE 45B (45B4) ANENOMETER, WHICH SUCCEEDED THE 45B MODEL INTRODUCED IN 1952. THE VELOCITY CONTACT SYSTEM HAD BEEN REDESIGNED TO EMPLOY A DIFFERENT FORM OF CONTACT & THE DIRECTION CONTACT SYSTEM WAS ALSOMODIFIED. BY 1982 CHANGES IN DESIGN HAD AGAIN BEEN MADE

Area Notes

Unknown

Details

Markings

INCISED 'M.S.C. 561/ LABEL ON BASE READS 'GOVERNMENT OF CANADA/ METEOROLOGICAL BRANCH/ EX 675/ DEPARTMENT OF TRANSPORT'

Missing

METAL COVER OF CONTACT ASSEMBLY COMPARTMENT HAS BEEN REPLACED BY PLEXIGLASS

Finish

PAINTED GREY METAL/ MULTICOLOURED SYNTHETIC

Decoration

N/A