View all Galvanometers
POST OFFICE GALVANOMETER GPO 41, 1930's
Used for indication of signal direction ( Current ) in telegraphy systems also as a test instrument.
Add a memory or information about this object
- These instruments were carried in a leather case with cover / lid and fixing strap, also made of leather.
My instrument is marked EDISON 1916 and the case is marked R.STAFFORD 1916 at the top.
.......... Thomas Kraemer, Cochem / Germany, 2nd of April 2016
- Also known as a linesmen detector or Q&I detector. They had two sensitivities the Quantity or Q coil of about.2 ohm and the Intensity or I coil of about 100 ohms. Generally used for testing for current on telegraph circuits or in conjunction with a battery for testing continuity.
.......... Arthur Williams, Invercargill New Zealand Awarua Communications Museum, 26th of November 2011