General Information

Serial #

N/A

Part Number

1

Total Parts

13

AKA

N/A

Patents

N/A

General Description

LEAD

Dimensions

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

Length

N/A

Width

N/A

Height

27.0 cm

Thickness

N/A

Weight

N/A

Diameter

14.4 cm

Volume

N/A

Lexicon

Group

Forestry

Category

Fire fighting

Sub-Category

N/A

Manufacturer

AKA

PNFI

Country

Canada

State/Province

Ontario

City

Chalk River

Context

Country

Canada

State/Province

Ontario

Period

1930'S +

Canada

CANADIAN DESIGNED EVAPORATION MEASURING DEVICE MADE FOR CANADIAN FORESTRY SERVICE./ FROM COLLECTION OF FORESTRY & FIRE-FIGHTING EQUIPMENT USED BY & ACQUIRED FROM PNFI, CANADIAN GOV'T FORESTRY RESEARCH ESTABLISHMENT WHICH OPERATED FROM 1918-1995. PNFI STUDIED SPECIES GROWTH & FOREST MANAGEMENT, PARTICULARLY FIRE PREVENTION & SUPPRESSION.

Function

DEVICE USED TO MEASURE RATE AT WHICH LIQUID EVAPORATES INTO AIR. THIS TYPE CONSISTED OF ONE SMALL PAN CONTAINING SULPHURIC ACID & ONE CONTAINING GLYCERINE; MEASUREMENTS OF EVAPORATION WERE TAKEN FROM EACH BY MEANS OF CALIBRATED PLUNGER. THEY WERE USED BY FORESTRY SERVICE IN DETERMINING RISK OF FOREST FIRE.

Technical

DESIGNED BY DR. DONALD HURST OF NRC ATOMIC ENERGY PROJECT AT CHALK RIVER, ON. THESE WERE SIMPLE MEANS OF MEASURING FOREST FIRE DANGER; IT WAS THOUGHT THAT THEY WOULD INTEGRATE EFFECTS OF WIND, HUMIDITY & TEMPERATURE. RAINFALL & EVAPORATION MEASUREMENTS WERE MAIN COMPONENTS OF FIRE DANGER RATING.

Area Notes

Unknown

Details

Markings

NONE

Missing

GLASS PLUNGER FOR .1 OR .2/ PROTECTIVE SCREENS IN WHICH PANS WOULD HAVE BEEN PLACED

Finish

UNFINISHED GREY

Decoration

N/A