General Information

Serial #

116889

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Bakelite base/ Metal meter casing/ Glass/ Bakelite?

Dimensions

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

Length

N/A

Width

11.4 cm

Height

12.1 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Communications

Category

Service-test equipment

Sub-Category

N/A

Manufacturer

AKA

Weston

Country

United States of America

State/Province

New Jersey

City

Newark

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

This particular voltmeter was used in the National Research Council Dept. of Applied Physics in Instrumental Optics.

Function

An instrument used to measure, in volts, the differences of potential between different points of an electrical circuit.

Technical

Mirror scale with knife-edge pointer to prevent parallax when reading scale. Type-written chart glued to back indicates systematic error. Model popular in schools and universities. Shielded from external magnetic fields. Permanent Magnet Movable Coil type. Horizontal reading. This instrument is identical except, for the range, to 1977.0030.

Area Notes

Unknown

Details

Markings

Mfr. Plate reads: "WESTON VOLTMETER/ PATENTED/ JUL. 10, '94 NOV. 20, '94/ JAN. 22, '95 OCT. 4, '98/ JUL. 16, '01 JUL. 31, '17/ OTHER PATENTS PENDING/ MODEL 280 No. 116889/ WESTON ELEC. INST. CORP. NEWARK, N.J., U.S.A." NRC sticker reads: "NATIONAL RESEARCH COUNCIL/ APPLIED PHYSICS / INSTRUMENTAL OPTICS/ INV - V7" Chart taped onto back of voltmeter reads: "2 2.01/ 3 3.01/ 4 4.03/ 5 5.02/ 6 6.02/ 7 7.01/ 8 8.03/ 9 9.03/ 10 10.08"

Missing

N/A

Finish

Unknown

Decoration

N/A