General Information

Serial #

2515

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

BRASS/ WOOD/ GLASS

Dimensions

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

Length

16.8 cm

Width

15.2 cm

Height

7.6 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

Weston

Country

United States of America

State/Province

New Jersey

City

Newark

Context

Country

Canada

State/Province

Quebec

Period

Unknown

Canada

Unknown

Function

Unknown

Technical

PORTABLE INSTRUMENTS CONSTRUCTED TO BE MOVED FROM PLACE TO PLACE FOR TESTING PURPOSES. THEY ARE USED MORE OR LESS FOR EXACT MEASUREMENTS & THEREFORE ARE DESIGNED FOR GREAT ACCURACY. ANCESTORS OF MOVING COIL INSTRUMENT WERE THE 'SIPHON RECORDER' DEV'D BY WILLIAMTHOMSON IN 1867 FOR TELEGRAPH INDUSTRY AND THE 'FISHBONE GALVANOMETER' INVENTED IN 1880 BY MARCEL DEPREZ. JACQUES D'ARSONVAL, SUGGESTED FIXING THE 'FISHBONE' IN DEPREZ'S INSTRUMENT, & MAKINGS ITS COIL MOVABLE. MAIN DISADVANTAGE OF THE D'ARSONVAL AMMETER WAS THAT TO WORK PROPERLY, IT REQ'D A VERY LIGHT MOUNTED COIL SO AS TO BE READILY MOVABLE. AS SUCH, IT DIDN'T MEET CRITICAL SUCCESS UNTIL TOWARDS END OF THE 19TH C.

Area Notes

Unknown

Details

Markings

'A.J. BURNS' STAMPED INTO WOOD BASE

Missing

COMPLETE

Finish

Unknown

Decoration

N/A