Category:Scans from 'Forty Years of Electrical Progress'/undescribed
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Media in category "Scans from 'Forty Years of Electrical Progress'/undescribed"
The following 28 files are in this category, out of 28 total.
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"Link" switch, 1891 (Forty Years of Electrical Progress).jpg 371 × 373; 18 KB
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Angold arc lamp, 1898 (Forty Years of Electrical Progress).jpg 856 × 985; 83 KB
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Arc lamp carbons (Forty Years of Electrical Progress).jpg 792 × 245; 22 KB
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Ebonite switch, 1888 (Forty Years of Electrical Progress).jpg 259 × 254; 11 KB
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Floral ceiling light (Forty Years of Electrical Progress).jpg 465 × 398; 36 KB
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Fusible cut-out, 1888 (Forty Years of Electrical Progress).jpg 330 × 227; 13 KB
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Main switchboard, c. 1888 (Forty Years of Electrical Progress).jpg 557 × 778; 88 KB
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Osmium lamp, 1905 (Forty Years of Electrical Progress).jpg 237 × 382; 9 KB
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Peel-Hawkins dynamo, 1898 (Forty Years of Electrical Progress).jpg 668 × 494; 53 KB
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Preece-Willmot switch, 1890 (Forty Years of Electrical Progress).jpg 382 × 383; 21 KB
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Robertson lamp, bottom loop (Forty Years of Electrical Progress).jpg 260 × 340; 12 KB
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Robertson lamp, brass cap (Forty Years of Electrical Progress).jpg 260 × 340; 14 KB
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Slate base switch, 1888 (Forty Years of Electrical Progress).jpg 306 × 331; 18 KB
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Sunbeam lamp, 1890 (Forty Years of Electrical Progress).jpg 422 × 339; 46 KB