Test set, open wire
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1968.0627.001
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- OBJECT TYPE
- WHEATSTONE BRIDGE
- DATE
- 1885
- ARTIFACT NUMBER
- 1968.0627.001
- MANUFACTURER
- Unknown
- MODEL
- Unknown
- LOCATION
- Unknown
More Information
General Information
- Serial #
- N/A
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- SHEET METAL CASE, BAKELITE PANEL, COPPER INSERTS IN BAKELITE PANEL TO SERVE AS SWITCHES, BRASS PINS WITH BAKELITE KNOBS USED TO COMPLETE SWITCH CIRCUIT, KEY (SWITCH) TO APPLY BATTERY CURRENT, RESISTANCE UNITS CONNECTED TO SWITCH POINTS INSIDE CASE
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- N/A
- Width
- 60.0 cm
- Height
- 19.0 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Communications
- Category
- Telegraphy
- Sub-Category
- N/A
Manufacturer
- AKA
- Unknown
- Country
- Unknown
- State/Province
- Unknown
- City
- Unknown
Context
- Country
- North America
- State/Province
- Unknown
- Period
- 1885-1900
- Canada
-
Unknown - Function
-
USED WITH A BATTERY AND A GALVANOMETER TO ACCURATELY MEASURE THE RESISTANCE OF OPEN WIRE TELEGRAPH LINES AND THUS LOCATE THE DISTANCE FROM THE MEASURING POINT TO A TROUBLE. - Technical
-
AN EARLY EXAMPLE OF OPEN WIRE MEASUREMENT EQUIPMENT - Area Notes
-
Unknown
Details
- Markings
- SWITCH PINS DESIGNATED FROM.1 TO 2000 (OHMS)/ PRINTED ON KNOBS: 'Galv'. 'Object' 'Batt.'
- Missing
- GALVANOMETER, BATTERY, 1 THUMB SCREW From CA of 09/26/1996 by Kevin Machan: Yes - Missing: one terminal screw.
- Finish
- BRIGHT PLATED COPPER CASE, BLACK BAKELITE, BLACK BAKELITE KNOBS, BRASS THUMB SCREW CONNECTORS, BRASS SWITCH PINS
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Unknown Manufacturer, Test set, open wire, circa 1885, Artifact no. 1968.0627, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/1968.0627.001/
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