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Vintage electronic test equipment featuring a Simpson analog direct-current milliampere meter.
The exact purpose, manufacturer, and model of the complete unit are unknown. It appears to be older custom-built, laboratory, radio, or electronics-related equipment housed in a metal enclosure.
The Simpson meter is marked:
• DIRECT CURRENT
• MILLIAMPERES
• 0–1 mA scale
• Simpson
The front panel includes multiple adjustment knobs, connections, and a toggle switch. Additional connections/components are located on the rear.
Approximate dimensions:
• 9” wide
• 5 1/2” high
• Depth not measured
This unit has NOT been tested and its operating condition is unknown. It is being sold AS-IS as non-working equipment for parts, restoration, repair, display, or possible component salvage.
There are scratches, scuffs, oxidation, dust, and other signs of age and previous use. Please review all photographs carefully for condition, configuration, connections, and included components.
Only the unit shown is included.
Please feel free to contact me with any questions — happy to help.

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