General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

WOOD CASING/ LEATHER CARRYING HANDLE/ PAPER METER SCALE/ GLASS METER COVER/ COPPER PLATE SENSOR/ METAL HARDWARE

Dimensions

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

Length

34.5 cm

Width

34.5 cm

Height

11.3 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Meteorology

Category

Atmospheric temperature measurement

Sub-Category

N/A

Manufacturer

AKA

PNFI

Country

Canada

State/Province

Ontario

City

Chalk River

Context

Country

Canada

State/Province

Ontario

Period

1937 +

Canada

TEST INSTRUMENT DESIGNED BY MEMBERS OF 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 PROVIDE EMPIRICAL MEASUREMENT OF FIRE INTENSITY BY MEASURING TEMPERATURE OF ASH & EMBERS OF NEWLY EXTINGUISHED TEST FIRE. TEST RESULTS WERE USED IN DEVELOPING FOREST FIRE DANGER RATING SYSTEM.

Technical

ONE-OF-A-KIND OR ONE-OF-A-FEW SPECIALISED INSTRUMENTS MADE BY PNFI. DESIGNED BY JAMES G. WRIGHT OF PNFI (IN COLLABORATION WITH DON ROSE), UNDER WHOM RESEARCH INTO FIRE CONTROL BEGAN IN 1929. IT PROVIDED EMPIRICAL MEASUREMENT OF FIRE INTENSITY, DATA USED TO HELP DEVELOP CANADIAN FOREST FIRE DANGER RATING SYSTEM IN 1930'S.

Area Notes

Unknown

Details

Markings

PLATE ON TOP READING "N.R.L./ 4.P.E. 789/ FEB. 9, 1937"

Missing

APPEARS COMPLETE

Finish

CASING ORIGINALLY PAINTED WHITE, NOW FLAKING OFF/ BROWN HANDLE/ WHITE PAPER SCALE, BLACK METER/ COLOURLESS, TRANSPARENT GLASS/ COPPER COLOURED SENSOR IN BLACK FRAME/ PLATED PARTS

Decoration

N/A