General Information

Serial #

134743

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Metal body/ Glass covered gauge/ Paper scale/ Brass binding posts set in bakelite.

Dimensions

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

Length

28.0 cm

Width

12.5 cm

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Energy-electric

Category

Measurement

Sub-Category

N/A

Manufacturer

AKA

Westinghouse

Country

United States of America

State/Province

Pennsylvania

City

Pittsburgh

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

Example of current measure from early electrical infrastructure. Probably sold through Westinghouse Canada in Hamilton.

Function

To measure direct current in amperes.

Technical

Switchboard meter for direct current with range up to 1200 amps. Larger meter than usual. Example of early meter with complete movement easily removed for repairs, representing the surviving workshop culture of the early 20th century. Flat glass to render the cover visible. Case is soft iron for magnetic shielding. Sometimes hand-marked scales. Classic art nouveau design and decorative features. The arrow of the pointer is perforated, which makes it more visible from far away. The arrow is thicker than similar Weston meters from the same period, as is the arm of the pointer. Having heavier movable parts meant that the pointer would have more momentum and thus over swing more, and take longer to stabilize.

Area Notes

Unknown

Details

Markings

Raised lettering on top surface of ammeter reads: "DIRECT CURRENT/ WESTINGHOUSE ELEC. & MFG. CO./ PITTSBURG, PA. U.S.A." Printed on gauge: "AMMETER/ STYLE NO. X.C. 11881 "C"/ SERIAL NO. 134743/ 50.4 MILLIVOLTS AT SHUNT EQUALS 1000 ON SCALE" Mfr's plate reads: "PATENTED/ OCT. 5, '97 JUNE 27, '99"

Missing

N/A

Finish

Unknown

Decoration

N/A