General Information

Serial #

437

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

WOODEN CASE, BRASS COVER WITHGLASS DIAL COVER, SYNTHETIC KNOBS, METAL & SYNTHETIC WORKING PARTS

Dimensions

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

Length

40.5 cm

Width

35.5 cm

Height

12.5 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Physics

Category

Electricity

Sub-Category

N/A

Manufacturer

AKA

Weston

Country

United States of America

State/Province

New Jersey

City

Newark

Context

Country

Canada

State/Province

Unknown

Period

PROBABLY EARLY PART OF 20TH C

Canada

EXAMPLE OF TYPE OF STANDARD VOLTMETER USED BY STANDARDS INSPECTORS IN CANADA

Function

USED TO MEASURE CONTINUOUS ELECTRICAL CURRENT. IT IS PARTICULARLY ADAPTED FOR USE AS REFERENCE STANDARDS FOR USERS OF A LARGE NUMBER OF D-C MEASURING INSTRUMENTS [REF 1]

Technical

VERY SENSITIVE AND ACCURATE INSTRUMENT FOR USE IN LABORATORIES WHERE EXTREMELY ACCURATE DETERMINATIONS OF CURRENT OR POTENTIAL ARE TO BE MADE. [REF 1]

Area Notes

Unknown

Details

Markings

PLATE AFFIXED TO TOP: 'WESTON DIRECT READING LABORATORY STANDARD/ VOLTMETER/ WESTON ELECTRICAL INSTRUMENT CO./ MANUFACTURERS, NEWARK, N.J., U.S.A./ PATENTED/ NOV. 6. 1889. NO. 392386 & NO. 392387. MAY 14. 1889. NO. 403311./ APR. 29. 1890. NO. 426992 & NO. 427022. JUNE 10. 1890./ No 437'/ DESIGNATIONS BESIDE KNOBS: '1.5/ 3/ 150/ +'/ SCRATCHED ON TOP OF CASE: 'L258'/ SCALE DIVISIONS FROM '0' TO '150' [IN TENS] AND '0' TO '3.0' [IN TWOS]/ THERMOMETER FROM '10' TO '40' DEGREES CENTIGRADE

Missing

N/A

Finish

WOOD CASE STAINED AND VARNISHED; LACQUERED BRASS COVER

Decoration

N/A