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- Hartmann & Braun Compass, circa 1894 -
- circa 1894
- Collections - Artifact
Hartmann & Braun Compass, circa 1894
- Tool Chest Used by Machinist John Kruesi, While Working for Thomas Edison, 1872-1899 -
- 1872-1899
- Collections - Artifact
Tool Chest Used by Machinist John Kruesi, While Working for Thomas Edison, 1872-1899
- Wattmeter, Used in Patent Litigation Case -
- 1913
- Collections - Artifact
Wattmeter, Used in Patent Litigation Case