General Information

Serial #

1669

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Metal casing/ Bakelite knobs & meter housing/ Synthetic sockets & cord/ Glass window/ Leather handle/ Fabric power cord.

Dimensions

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

Length

31.5 cm

Width

15.6 cm

Height

10.2 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

General Radionics

Country

Canada

State/Province

Ontario

City

Toronto

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

This vacuum tube voltmeter was made in Canada by a Canadian company for use in Canada.

Function

A voltage measuring instrument which used the amplifying & rectifying properties of a vacuum tube to measure either direct or alternating voltages (Smith, P.456)

Technical

The vacuum tube voltmeter is a significant change from the earlier moving designs.

Area Notes

Unknown

Details

Markings

Silver & red applique lettering on front panel reads: 'MODEL 900', 'VOMAX', 'MCMURDO SILVER DIVISION OR/ GENERAL RADIOTRONICS/ LIMITED/ TORONTO - CANADA', with mfr.'s logo and control function labels ; Black & green lettering and scale on meter face reads: 'MODEL 900' & 'MCMURDO SILVER COMPANY', with mfr.'s logo ; Mfr's plate on back with mfr.'s name, model & serial nos. technical info.

Missing

N/A

Finish

Casing painted blue-grey enamel/ Front panel painted dark grey/ Black bakelite/ Red & black synthetic/ Brown power cord/ Black leather/ White meter face/ Metallic trim on front panel

Decoration

N/A