Category:Ring and spring mounts

Subcategories

This category has only the following subcategory.

Media in category "Ring and spring mounts"

The following 9 files are in this category, out of 9 total.

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  Astatic crystal mic.jpg 4,032 × 3,024; 1.84 MB
  
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  Carbon microphone, c. 1920s, Ellis Electrical Laboratories - Museum of Science and Industry (Chicago) - DSC06626.JPG 2,886 × 3,927; 5.52 MB
  
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  CKUA Microphone, National Music Centre.jpg 2,448 × 3,264; 2.87 MB
  
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  Eoin O'Duffy 1934.jpg 2,128 × 2,717; 868 KB
  
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  Eredeti mikrofon az 1920-as évek végéről, a csehszlovák rádió kezdeti idejéből. Fortepan 56105.jpg 2,812 × 3,617; 6.51 MB
  
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  Kohlemikrofon Alois Zettler.jpg 2,000 × 1,333; 362 KB
  
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  Marconi Reisz microphone.jpg 1,536 × 2,304; 1.68 MB
  
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  Two double button carbon microphones.jpg 245 × 225; 16 KB
  
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  Western electrics rundradiomikrofon i sitt skyddande fodral, Nordisk familjebok.png 1,552 × 1,818; 279 KB