General Information

Serial #

727996

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

WOODEN CASE WITH ATTACHED LID; SYNTHETIC TOP PANEL AND KNOBS;GLASS COVERS OVER DIALS

Dimensions

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

Length

41.0 cm

Width

30.0 cm

Height

16.0 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

Leeds Northrup

Country

United States of America

State/Province

Pennsylvania

City

Philadelphia

Context

Country

Canada

State/Province

Ontario

Period

PROBABLY USED IN THE 1940S AND 1950S

Canada

TYPE SAMPLE OF TEST EQUIPMENT USED BY THE STANDARDS DIVISION AT THE NRC IN OTTAWA

Function

USED FOR DETERMINING THE RATIO AND PHASE ANGLE CHARACTERISTICS OF POTENTIAL TRANSFORMERS.

Technical

IT IS DESIGNED FOR ROUTINE TESTING, EITHER IN THE LAB OR ON INSTALLED TRANSFORMERS. WHILE THE SET WAS DESIGNED FOR TESTING INSTRUMENT TRANSFORMERS, IT IS USEFUL ALSO FOR TESTING THE RATIO AND REGULATION OF POWER TRANSFORMERS. [REF 1]

Area Notes

Unknown

Details

Markings

PRINTED ON TOP PANEL: 'LN [LOGO]/ LEEDS & NORTHRUP CO/ PHILADELPHIA/ 727996/ MADE IN U.S.A./ VM/ PH SHIFTER/ 25 CYCLES/ 60 CYCLES/ PHASE ANGLE/ RATIO/ STD TEST/ CHECK VOLTMETER TEST'/ MOLDED IN ONE KNOB: 'LEEDS & NORTHRUP CO. PHIADELPHIA.'/ LABELS AFFIXED TO TOP PANEL:'NOTE/ On 25 cycles do not use/ more than 50 volts on/ phase shifter terminals.' 'DO NOT REMOVE/.../ Holding unit/ 205B/ E.D.R./ 64172'/ PLATE AFFIXED TO FRONT OF LID: 'DOMINION OF CANADA/ DEPT. OF TRADE AND COMMERCE/ STANDARDS DIVISION/ INSPECTION STANDARD NO. L56'/ PAINTED ON TOP: 'DELICATE INSTRUMENT/ HANDLE WITH CARE/ PROPERTY OF/ STANDARDS LABORATORY/ OTTAWA'

Missing

APPEARS COMPLETE

Finish

WOOD STAINED AND VARNISHED; BLACK TOP PANEL AND KNOBS; BROWN LEATHER HANDLE

Decoration

N/A