General Information

Serial #

908463

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Steel body/ glass window/ paper scale/ bakelite.

Dimensions

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

Length

21.6 cm

Width

15.9 cm

Height

27.9 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

General Electric

Country

Canada

State/Province

Ontario

City

Toronto

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

Made and used in Canada.

Function

Measures the power factor of a polyphase AC circuit, probably a two-phase four-wire circuit (see reference 1).

Technical

Popular style on switchboards where many meters need to be stacked vertically. This form appeared before the turn of the century and remained popular for decades afterwards. Since the diamond-shaped pointer is in line with the scale, parallax errors could be quite small. "The power factor of an alternating current circuit is defined as the ratio of the true watts to the apparent watts or volt-amperes of the circuit. […] they operate essentially as phase angles meters and measure the phase angle of lead or lag between the currents in the current and potential circuits" (see reference 4)

Area Notes

Unknown

Details

Markings

On scale:'POWER FACTOR/ LAG/ LEAD/ NO. 908463/ PAT'D JUNE 1 , 1909' ; Mfr. plate: 'CANADIAN GENERAL ELECTRIC CO. LIMITED/ TORONTO, ONTARIO, CANADA' ; Number '43785' written on back.

Missing

N/A

Finish

Black.

Decoration

N/A