General Information

Serial #

1607

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

.1 NON-FERROUS METAL (BRASS?) BODY & PARTS; GLASS CYLINDER & RODS; SYNTHETIC HANDLE/.2 GLASS WITH METAL BARS FORMING FARADAY CAGE

Dimensions

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

Length

21.5 cm

Width

21.5 cm

Height

37.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Energy-electric

Category

Measurement

Sub-Category

N/A

Manufacturer

AKA

Elliott

Country

Canada

State/Province

Ontario

City

London

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

PART OF LARGE & VARIED COLLECTION OF OVER 7500 ELECTRICAL ITEMS ACQUIRED & DOCUMENTED BY ONTARIO HYDRO IN 1960S. COLLECTION WAS THOUGHT TO BE LARGEST & MOST COMPREHENSIVE IN CANADA & WAS DONATED TO NMST IN 1992.

Function

INSTRUMENT USED TO MEASURE ELECTRICAL POTENTIAL (VOLTS) OR CHARGE (COULOMBS) - CHARGE AND ELECTRIC POTENTIAL ARE DIRECTLY RELATED; BY MEASURING CHANGE IN ACCUMULATED CHARGE OVER TIME, CURRENT (AMPERES) CAN ALSO BE DETERMINED (REF. 2).

Technical

BASIC QUADRANT ELECTROMETER WAS DEVELOPED BY LORD KELVIN (WILLIAM THOMSON) IN 1860S, ENABLINGABSOLUTE MEASUREMENTS TO BE MADE OF ELECTROSTATIC POTENTIALS. EARLIEST VERSIONS WERE USUALLY HOUSED INSIDE "BIRD CAGE" (FARADAY CAGE) OR BOX IN ORDER TO PROTECT INSTRUMENT FROM STRAY ELECTROSTATIC CHARGES (REFS. 2 & 3).

Area Notes

Unknown

Details

Markings

.1 INCISED LETTERING ON BASE READS "ELLIOTT BROS./ LONDON/ NO. 1607"

Missing

UNKNOWN

Finish

.1 GOLD COLOURED METAL; COLOURLESS TRANSPARENT & GREY COATED GLASS/.2 COLOURLESS TRANSPARENT GLASS; GOLD COLOURED METAL

Decoration

N/A