General Information

Serial #

1836

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

ALL METAL.

Dimensions

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

Length

22.5 cm

Width

21.0 cm

Height

11.6 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Meteorology

Category

Sunshine intensity & duration measurement

Sub-Category

N/A

Manufacturer

AKA

Casella

Country

England

State/Province

Unknown

City

London

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

TYPE OF SUNSHINE RECORDER USED BY CANADIAN METEOROLOGICAL SERVICE IN CANADIAN CLIMATE STUDIES; CAMPBELL-STOKES RECORDERS HAVE BEEN USED IN CANADA SINCE AT LEAST THE 1920'S.

Function

AN INSTRUMENT FOR MEASURING THE DURATION OF SUNSHINE IN WHICH THE SUN'S RAYS, COLLECTED BY A SPHERE OF OPTICAL GLASS, BURN A TRACK IN A SPECIALLY PREPARED CARD.

Technical

THE CAMPBELL-STOKES RECORDER IS BASICALLY A RECORDING SUNDIAL, INVENTED IN 1853 AND ADAPTED TO USE PAPER CHARTS IN 1879. LATER, A MEANS OF ADJUSTING FOR LATITUDE WAS ADDED. THIS APPEARS TO BE AN ORDINARY CAMPBELL-STOKES RECORDER, WITH LATITUDE ADJUSTMENT BUT NO UPPER SPHERE SUPPORT.

Area Notes

Unknown

Details

Markings

Incised lettering on base reading 'CASELLA/ LONDON' & 'NO. 1836'/ incised scale marked 45 to 65.

Missing

GLASSSPHERE, PARTS; BRACKET IS DETACHED. From CA of 12/15/1993 by Tony Missio: Yes - missing glass sphere

Finish

BLACK ENAMELLED? STAND/ GREEN PAINTED BASE

Decoration

N/A