General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Steel case, glass window, calibrated metal meter face, plastic thumb nuts, brass thumb nuts.

Dimensions

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

Length

11.4 cm

Width

22.9 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

Weston

Country

United States of America

State/Province

New Jersey

City

Newark

Context

Country

North America

State/Province

Unknown

Period

1902-1940

Canada

Was used in radio station VE90B now CHU, Canada's time reference source maintained by the Dominion Observatory.

Function

Used to monitor the flow of direct current in a power room.

Technical

This artifact is similar to 68.0580. The fact that this model was still being mfr'd in 1941 shows the usefulness of its design.

Area Notes

Unknown

Details

Markings

Label glued to the back of the ammeter reads: "DIRECTIONS./ It is important that the following be carefully observed in connecting/ up Weston Ammeter with shunts:/ 1st. See that the instrument, cables and shunt bear the same manufacturing numbers, as/ they are adjusted and numbered in sets, and each set must therefore be connected up together./ 2nd. Always connect the cable to the shunt first before connecting to the instrument./ 3d. All contacts must be cleaned and screwed down firmly./ 4th. Do not cut the cables or in any way change the/ length of them./ 5th. Do not break the seals; if the instrument is out of order ship it to the maker for repairs./ 6th. When shipping instruments fasten the cover to the packing box with screws, not nails,/ as the pounding with the hammer will injure the instrument./ WESTON ELECTRICAL INSTRUMENT CO.,/ NEWARK, N.J., U.S.A." Face plate reads: "WESTON AMMETER/ MADE BY/ WESTON ELECTRICAL INSTRUMENT COMPANY/ NEWARK, N.J; U.S.A." Mfr. patent plate: "PATENTED NOV. 6, 88. MAY, 14, 89./ APR. 29, 90. NOV. 11, 90. FEB. 17, 91./ MAY, 12, 91. DEC. 29, 91. MAR. 8, 92./ APR. 26, 92. JUN. 28, 92. AUG. 16, 92./ NOV. 22, 92. JAN. 31, 93. APR. 4, 93./ MAY 2, 93. MAY, 16, 93. JUN. 13, 93./ JUL. 10, 94. NOV. 20, 94. JAN. 29, 95./ OCT. 4, 98. JUL. 16, 01./ DESIGN PATENTS JUN. 10, 90./ MAR. 20, 94. MAR. 27, 94. MAR. 22, 98."

Missing

External shunts.

Finish

Black glossy enamel on case, meter face dull/ Black enamel with raised nickel plated decoration and manufacturer's name.

Decoration

Raised leaf like decoration on face.