Galvanometer

Use this image

Can I reuse this image without permission? Yes

Object images on the Ingenium Collection’s portal have the following Creative Commons license:

ATTRIBUTE THIS IMAGE

Ingenium, 1970.0069.001
Permalink:

Ingenium is releasing this image under the Creative Commons licensing framework, and encourages downloading and reuse for non-commercial purposes. Please acknowledge Ingenium and cite the artifact number.

DOWNLOAD IMAGE

PURCHASE THIS IMAGE

This image is free for non-commercial use.

For commercial use, please consult our Reproduction Fees and contact us to purchase the image.

OBJECT TYPE: DIFFERENTIAL/HORIZONTAL/ASTATIC
DATE: 1885
ARTIFACT NUMBER: 1970.0069.001

MANUFACTURER: SILVERTOWN TELEGRAPH WORKS
MODEL: Unknown
LOCATION: London, England

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 1
AKA: N/A
Patents: N/A
General Description: BRASS GALVANOMETER CASING, KEY ARMS, SHUNT TERMINALS, 2 MAIN TERMINALS & FITTINGS/ METAL FACE & POINTER/ EBONITE BASE, KEYHANDLES & PLUGHANDLE/ GLASS

Dimensions

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

Length: 7.6 cm
Width: 13.4 cm
Height: 17.2 cm
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Communications
Category: Telegraphy
Sub-Category: N/A

Manufacturer

AKA: SILVERTOWN
Country: England
State/Province: Unknown
City: London

Context

Country: Unknown
State/Province: Unknown
Period: CIRCA 1885
Canada: Unknown
Function: AN INSTRUMENT FOR PRECISION TESTING OF RESISTANCES
Technical: MOVING IRON GALVANOMETERS WERE 1ST DISCUSSED BY G.C. PAGE (1845) BUT DIDN'T TAKE OFF COMMERCIALLY 'TIL 1880S. IDEA IS SIMILAR IN PRINCIPLE TO MARCEL DEPREZ'S "FISHBONE GALVANOMETER". A PIECE OF SOFT IRON WAS PUT IN A SOLENOID COIL BETWEEN POLES OF A POWERFUL PERMANENT MAGNET. (SEE COMPLETE WS IN S.I. & O:DRIVE S.I.)
Area Notes: Unknown

Details

Markings: ON FACE: TOP GRADUATED SCALE '100 TO 0' & '0 TO 100'; BOTTOM SCALE '90 TO 0' & '0 TO 90'/ MANUFACTURER: 'TELEGRAPH WORKS/ SILVERTOWN/ LONDON'/ ON BACK LEFT TERMINAL: 'LINE/ OR/ BRIDGE'/ ON BACK RIGHT TERMINAL: 'EARTH/ OR/ BRIDGE'/ FRONT SHUNT MARKINGS: '1/9, 1/99, 1/999'
Missing: MISSING A SCREW ON THE SIDE
Finish: Unknown
Decoration: BEVELLED EDGES OF GLASS

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

SILVERTOWN TELEGRAPH WORKS, Galvanometer, circa 1885, Artifact no. 1970.0069, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1970.0069.001/

FEEDBACK

Submit a question or comment about this artifact.