Talk:Dietzgen
Latest comment: 9 years ago by Lbeaumont in topic Slide rule and drafting equipment company
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Slide rule and drafting equipment company
editAbout 50 years ago Dietzgen was a prominant manufacturer of slide rules and drafting equipment. Perhaps this can be added to the list. Thanks! --Lbeaumont (talk) 18:46, 25 April 2015 (UTC)