Category:Tests on a Martin rotatory converter (1919)

Media in category "Tests on a Martin rotatory converter (1919)"

The following 5 files are in this category, out of 5 total.

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  Tests on a Martin rotatory converter (1919) (14578170759).jpg 3,024 × 2,149; 1.48 MB
  
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  Tests on a Martin rotatory converter (1919) (14762456284).jpg 3,024 × 2,201; 861 KB
  
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  Tests on a Martin rotatory converter (1919) (14762457514).jpg 3,024 × 2,149; 1.45 MB
  
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  Tests on a Martin rotatory converter (1919) (14762458424).jpg 3,024 × 2,149; 1.45 MB
  
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  Tests on a Martin rotatory converter (1919) (14764487582).jpg 3,024 × 2,175; 829 KB