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- "Troubleshooter" Combination Ammeter / Voltmeter, circa 1919 - This combined voltmeter and ammeter was used for testing automotive electrical systems, batteries, and ignitions. It was sold alongside an extensive collection of instructional material to educate automotive repairmen in electrical systems.
- circa 1919
- Collections - Artifact
"Troubleshooter" Combination Ammeter / Voltmeter, circa 1919
This combined voltmeter and ammeter was used for testing automotive electrical systems, batteries, and ignitions. It was sold alongside an extensive collection of instructional material to educate automotive repairmen in electrical systems.