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            This is a file from the  Wikimedia Commons. Information from its  description page there is shown below.  Commons is a freely licensed media file repository.  You can help. 
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        La bildo estas kopiita de wikipedia:en. La originala priskribo estas:
        A circular slide rule. Photo by  User:Janke, released to
        
         
          | Public domainPublic domainfalsefalse | 
         
        
        
         
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          This work has been released into the  public domain by its author,  Janke at the  English Wikipedia project. This applies worldwide.
 In case this is not legally possible:  Janke grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. 
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          | date/time | 
          username | 
          edit summary | 
         
         
          | 13:04, 28 September 2005 | 
           en:User:Janke | 
          (A circular slide rule. Photo by  User:Janke, released to {{PD-self}}) | 
         
        
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         - (del) (cur) 13:04, 28 September 2005 . .  en:User:Janke Janke (  en:User_talk:Janke Talk) . . 633x575 (70157 bytes) (A circular slide rule. Photo by  en:User:Janke User:Janke, released to {
 
        
        
        
        
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