General Information

Serial #

R/940

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

WOOD (OAK?) BASE & TOP FRAME/ GLAZED SIDES & TOP/ NON-FERROUS METAL (BRASS?) BASE PLATE, DRUM, ANEROID, MECHANISM PARTS/ FERROUS METAL PARTS/ PAPER CHART

Dimensions

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

Length

23.4 cm

Width

16.2 cm

Height

13.6 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 METEOROLOGICAL INSTRUMENT USED BY THE CANADIAN FORESTRY SERVICE TO MONITOR ATMOSPHERIC-CLIMATIC CONDITIONS.

Function

AN INSTRUMENT THAT MEASURES & RECORDS ATMOSPHERIC PRESSURE THROUGH ITS EFFECT ON AN ANEROID, A METAL CHAMBER PARTIALLY EXHAUSTED OF AIR.

Technical

AN EXAMPLE OF A COMPACT, NON-PORTABLE RECORDING BAROMETER WITH A SIX-CHAMBER ANEROID. BAROGRAPHS WITH SIMILAR CONSTRUCTION BUT A LESS COMPACT DESIGN MAY BE SEEN IN NEGRETTI & ZAMBRA'S CIRCA 1937 CATALOGUE (REF. 2).

Area Notes

Unknown

Details

Markings

INCISED GOLD LETTERING READING 'NEGRETTI & ZAMBRA/ LONDON' & 'R/940' ON BASE PLATE & 'MADE FOR INSTRUMENTS LTD./ OTTAWA & TORONTO' ON MECHANISM SUPPORT/ CHART PRINTED IN GREEN 'PRINTED IN CANADA', 'CHART NO. N1 1002 (N144); MARKED FOR 28.5 TO 31 MB MONDAY TO SUNDAY; HANDWRITTEN BLACK '13/6/77' & '9:30 AM'

Missing

N/A

Finish

FRAME STAINED BROWN & VARNISHED/ BLACK PAINTED, COPPER-COLOURED,BRASS-COLOURED, PLATED & METALLIC PARTS/ WHITE PAPER

Decoration

N/A