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Title: Zenobe Gramme's small hand dynamo for laboratory work.
Caption: An engraving depicting Zenobe Gramme's small hand dynamo for laboratory work. The armature rotated between the poles of a permanent steel magnet. Zenobe Gramme (1826-1901) a Belgian electrical engineer. Dated 19th century.
Credit: Album / Universal Images Group / Universal History Archive/UIG
Image size: 4021 × 5216 px | 60.0 MB
Print size: 34.0 × 44.2 cm | 1583.1 × 2053.5 in (300 dpi)