General Information

Serial #

27

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

METAL CASING & WORKING PARTS/ SYNTHETIC CASING WINDOW

Dimensions

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

Length

25.1 cm

Width

14.0 cm

Height

27.5 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Meteorology

Category

Upper air pressure, temperature & humidity measurement

Sub-Category

N/A

Manufacturer

AKA

Unknown

Country

United States of America

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Unknown

Period

POSSIBLY 1932-1933 INTERNATIONAL POLAR YEAR.

Canada

TYPE OF INSTRUMENT USED AT ONE OF CANADA'S INTERNATIONALPOLAR YEAR STATIONS. MARVIN METEOROGRAPHS WERE FLOWN BY KITE TO RECORD METEOROLOGICAL DATA AS PART OF PROGRAM OF METEOROLOGICAL, MAGNETIC, AURORAL, AND ALLIED OBSERVATIONS. INSTRUMENTS WERE LOANED BY U.S. WEATHER BUREAU (3).

Function

INSTRUMENT LIFTED INTO UPPER ATMOSPHERE BY KITE OR BALLOON TO MEASURE & RECORD TEMPERATURE, HUMIDITY, AIR PRESSURE, & POSSIBLY WIND VELOCITY.

Technical

CLOSELY RESSEMBLES MARVIN KITE METEOROGRAPH, DESIGNED IN 1898 BY C. MARVIN OF U.S. WEATHER BUREAU. ASSMANN OF GERMANY DEVELOPED MODIFIED VERSION CA 1912 WITH WINDMILL ANEMOMETER IN DUCT. LATER, BIMETALLIC THERMOMETER REPLACED BOURDON TUBE (1,2 - SEE ILLUSTRATIONS IN SUPP.INFO.)

Area Notes

Unknown

Details

Markings

INCISED 'US WEATHER BUREAU NO. 27' ON INSIDE FRAME'/ BLACK IMPRESSION PRINTED LABEL READING 'PRE 1940 U.S.A.'

Missing

HAIR BUNDLE FOR HYGROMETER/ POSSIBLY WINDMILL ANEMOMETER From CA of 01/28/1994 by Tony Missio: Undetermined

Finish

METALLIC CASING & PARTS/ YELLOW SYNTHETIC/ BRASS COLOURED PARTS

Decoration

N/A