- TitleThe Polyphase slide rule : a self teaching manual with tables of settings, equivalents and gauge points / by William E. Breckenridge.
- AuthorWilliam Breckenridge, 1869William Breckenridge, 1869,Keuffel & Esser Co.
- Description88 p. :, 21 cm.
- Call NumberQA73 .B743 1925
- SubjectsSlide-rule.
- PublishingNew York :: Keuffel & Esser Co., 1925.
- MaterialBook
