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Vintage Leeds & Northrup 2420 B Light Beam Galvanometer in Wood Box Made In USA:
$69.99
Vintage Leeds & Northrup 2420B Light Beam Galvanometer in Wood Box. Serial number 1002917.
Item is untested and sold in "as-is" condition. We cannot verify if it works. Please inspect the photos thoroughly to determine its condition before buying.
Device Function & Specifications
- Core Purpose: It is a highly sensitive instrument used for detecting and measuring very small electrical currents.
- Mechanism: The unit features an internal lamp, a lens, a magnet, and a small mirror. It operates by reflecting a localized light beam from the mirror onto a built-in scale to indicate the strength and direction of a current without heavily loading a circuit.
- Physical Dimensions: Typically weighs around 5 pounds and measures approximately 8.5 inches long by 5.5 inches wide and tall
- Connections: The exterior casing usually includes dedicated terminals for "GA" (Galvanometer) input and a separate "6-VOLTS" connection to power the internal light source lamp.
