General Information

Serial #

EC 13665

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

GLASS INNER & OUTER TUBES/ RUBBER PART/ ALCOHOL/ CARDBOARD BOX

Dimensions

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

Length

41.0 cm

Width

5.7 cm

Height

4.2 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Forestry

Category

Silviculture

Sub-Category

N/A

Manufacturer

AKA

Negretti Zambra

Country

England

State/Province

Unknown

City

London

Context

Country

Canada

State/Province

Unknown

Period

Unknown

Canada

A BRITISH-MADE THERMOMETER USED BY THE CANADIAN FORESTRY SERVICE TO MONITOR ATMOSPHERIC-CLIMATIC CONDITIONS. VERY SIMILAR THERMOMETERS WERE USED BY THE CANADIAN METEOROLOGICAL SERVICE.

Function

AN INSTRUMENT THAT MEASURES THE LOWEST OR MINIMUM AIR TEMPERATURE BY MEANS OF A CONICAL GLASS INDEX WHICH REMAINS FIXED IN A COLUMN OF ALCOHOL AT THE LOWEST POINT TO WHICH THE LIQUID DROPS.

Technical

A DOUBLE-TUBE OR SHEATHED MINIMUM THERMOMETER WITH A SPHERICALBULB. THE DOUBLE TUBE SERVED TO PROTECT THE SCALE FROM WEATHERING. THIS TYPE COULD BE USED AS AN AIR MINIMUM OR TERRESTRIAL RADIATION (GRASS MINIMUM) THERMOMETER.

Area Notes

Unknown

Details

Markings

BLACK LETTERING ON BACK OF INNER TUBE READING 'MADE IN ENGLAND', 'NEGRETTI & ZAMBRA LONDON', 'MIN MK 2A B.S. 692' & ON FRONT 'EC-13665' WITH SCALE MARKINGS FOR -10 TO +120 F.

Missing

N/A

Finish

COLOURLESS TRANSPARENT GLASS WITH WHITE-BACKED INNER TUBE/ NATURAL CARDBOARD

Decoration

N/A