General Information

Serial #

L1747

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

METAL BASE & CASING, BIMETAL, SENSOR & RECORDING MECHANISMS, CLOCK & DRUM, PARTS/ GLASS WINDOW/ HAIR/ PAPER CHART ON DRUM

Dimensions

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

Length

28.5 cm

Width

13.1 cm

Height

20.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Meteorology

Category

Combination instruments

Sub-Category

N/A

Manufacturer

AKA

Short Mason

Country

England

State/Province

Unknown

City

London

Context

Country

Canada

State/Province

Quebec

Period

Unknown

Canada

EQUIPMENT USED BY CANADIAN GOVERNMENT PRINTING BUREAU, TO MONITOR INTERIOR TEMPERATURE & HUMIDITY. THIS ITEM WAS COLLECTED WITH PAPER TESTINGINSTRUMENTS 970817-821; CONSTANT TEMPERATURE & HUMIDITY WAS DESIRABLE IN PAPER TESTING LABORATORY TO OBTAIN CONSISTENT TEST RESULTS (REF. 3).

Function

DUAL FUNCTION INSTRUMENT THAT MEASURES & RECORDS ATMOSPHERIC HUMIDITY & TEMPERATURE BY MEANS OF THEIR EFFECT ON A HAIR BUNDLE HUMIDITY SENSOR & BIMETAL TEMPERATURE SENSOR RESPECTIVELY. USED BY PRINTING BUREAU, POSSIBLY TO MONITOR RELATIVE HUMIDITY IN PAPER TESTING LABORATORY OR PRINTING SHOP.

Technical

EXAMPLE OF DUAL-FUNCTION METEOROLOGICAL INSTRUMENT WITH INTERNAL TEMPERATURE SENSOR FORMED BY HELIX OF BIMETALLIC METAL WHICH COILS & UNCOILS IN RESPONSE TO CHANGES IN TEMPERATURE, & EXTERNAL HUMIDITY SENSOR FORMED BY BUNDLE OF SPECIALLY TREATED HUMAN HAIR WHICH CHANGES ITS LENGTH IN RESPONSE TO CHANGES IN HUMIDITY.

Area Notes

Unknown

Details

Markings

INCISED LETTERING ON COVER FRONT READS "SHORT & MASON/ LONDON/ MADE IN ENGLAND", "CHART NO. 229", "No L 1747"/ INCISED BLACK LETTERING ON INTERIOR MECHANISM READS "REG No 476369"/ RED & BLACK NUMBERS & MARKINGS ON CHART

Missing

2 BOTTLES OF INK

Finish

BLACK PAINTED BASE WITH WHITE INTERIOR/ COPPER COLOURED COVER WITH GOLD COLOURED HANDLE/ GOLD COLOURED INK BOTTLE HOLDERS/ GOLD COLOURED, PLATED & BLACK PAINTED BIMETAL & HUMIDITY SENSOR MECHANISMS/ WHITE PAPER

Decoration

N/A