General Information

Serial #

139

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Metal casing/ Bakelite knobs/ Glass/ Leather handle.

Dimensions

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

Length

19.1 cm

Width

19.0 cm

Height

32.5 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

Millivac

Country

United States of America

State/Province

Connecticut

City

New Haven

Context

Country

Canada

State/Province

Ontario

Period

Unknown

Canada

Used at NRC for testing and measuring.

Function

Used for laboratory measurements of extremely small D.C. currents (in the micro ampere range).

Technical

Example of precision laboratory instrumentation from the 1950s. Type sample.

Area Notes

Unknown

Details

Markings

Markings on face of ammeter read: "MILLIVAC/ DC - MICRO - MICRO - AMPEREMETER/ TYPE MV-11A/ SERIAL NO. 139/ [various markings and scales around knobs]/ MILLIVAC INSTRUMENT CORP/ BOX 3027. NEW HAVEN. CONN." Number stencilled in white on top of ammeter (near handle): "168" Sticker on top of ammeter (near handle): "NATIONAL RESEARCH/ ELECTRICAL ENGINEERING/ LABORATORIES [a red "D" is painted on top of sticker]" Information on yellow tag reads: "THIS METER/ was calibrated at the factory/ with 115 V, 60 c.p.s. If recali-/ bration, due to transport-shock/ or other abuse should become necessary, open back plate and/ follow simple calibration instruct-/ tions. Do not open modulator/ as this automatically cancels/ guarantee./ MILLIVAC/ INSTRUMENT/ CORP."

Missing

Input cord & plug missing.

Finish

Grey crackle casing with black front plate/ Black knobs/ White trim & markings.

Decoration

NRC sticker & stencilled inventory no. on top.