• 455 Martinson, Los Angeles
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  • Koch, Huxhold & Hannemann (KHH) - made surprising System Korte slide rule that does addition & subtraction
  • Smallwood Folding Shoe Sizing Stick in metric for French shoe sizes 10-48 in increments of a Paris point (⅔ cm)
  • Lawrence MIT Antenna slide rule for radar antenna performance was classified during WWII by UK & US governments
  • ALRO-made ruler unusually with a cursor for analysing ECG printouts of the cardiac Sinus Rhythms
  • Hatters Gauge - for measuring the size of a hat but unusually calibrated in metric & imperial
  • Glovers Rule - for measuring the length of a glove in imperial inches
  • Unusual non-logarithmic QR 41 military model by Dennert & Pape (D&P) for training anti-aircraft gunners
  • Colour combinations slide rule made by German WH-Wohnen for Interior Designers
  • Professor Fuller’s Drum Calculator from 1878 - made by W.F. Stanley
  • Modern wristwatch with slide rule bezel calculator made by German maker Kienzle
  • Ruxton made Multi-Vider combined drop-lead pencil & slide rule
  • Rare Otis King Model N for Retail & Monetary with white scales (422 & 424) on a black background
  • Darnley’s Rotable Lightning Calculator/Pencil Case calculating aid
  • Makeba made Kombinator combination pencil & slide rule
  • Rare Carbic-made Fischer Calculator slide rule
  • Specialist slide rule for a national home cable radio broadcasting system offered in The Netherlands from 1930 to1970
  • Smallest drum (≈ 2.4m) made by renowned Swiss maker LOGA

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Interested in finding out more out about such calculating wonders? Then try one of the slide rule related articles (often light-hearted) I have published.
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No Search Results with RUYI (Si Da Rule Factory) SANTOK / SANTOKU PENOL Griffin & Co. Ltd. (Charles) TEKNOR Color Wheel Company US Navy Hydrographic Office AstroCart David Chandler Co. George Philip & Son Ltd. PlantijnCasparie E. Gundlach AG Adix Company Brevetti Lanza Reliable Typewriter & Adding Machine Corp. National Rechenwalze, A.G. Billeter, Julius & Ernst Contina AG / CURTA Oahu Publishing Co. DEVCO M & M Enterprises MuseLab Inc. Rodgers, J.N. Ltd. Trebb Sales Datalizer Slide Charts Inc. Trascacco Norwood Enterprises Mears, Neal F. Aero Products Research Inc. KOSMOS SHUBB Kembo-Cuisenaire COX & STEVENS Aircraft Corp. Muziekuitgeverij van Teeseling Stichting Jazz Beheer Amsterdam Cooper, Charles T. & Sons (Ltd.) Co Atpress Uitgeversmaatschappij Interland Véma Drukwerk bv Music Rule Co. Pan American Band Int. Co. Musigraph Company Oxford University Press Waltman Jr., J. Smallwood, I & D (John & Daniel) Clements Newling & Co. Ltd. Booth, W. & Co. Johann Faber GILL, Thomas & Co. Oertling, Ludwig Burrows, W. & J. Long, Joseph Lumley, L. & Co. Buss, Thomas Odempsey Bate, Robert Brettell Grove, W. LOFTUS, William R. Meierhofer (Hans) Logomat Rechengeräte Albert Martz Philips Electrical Ltd. Rudolf Bauer & Co. Hoehler A. A. (HH) Farrow (James) Controller Calculator KLPV - Factory for Calculating Instruments - Kiev Kahn Frères OHICO ALKU (Alfred Kuhmann) Reliance Nameplates Ltd Kienzle Baird & Tatlock Schacht & Westerich Ruxton Multi-Vider Corp. BOOTS / RINGPLAN Premia Draftwell Scientific Publishing Co. Koch, Huxhold & Hannemann (KHH) Le Girondin - ELPE Wizard Werke GmbH Otto Meuter Rechenmaschinenfabrik Ebmeyer, H.W. Master Addimult Rechenmaschinenfabrik Kingson HONO J.H. Steward Ltd. Educational Novelty Co. Kemigravyr AB Van Oosterhout, A. J. A. Nicholl & Co. BIOMATE (UK) Ltd. HEXCO Inc. TU - Kiev Sunrise - Moscow Prometheus/Prometei/Prometejs - Leningrad SPZ - Voronezh LFAI - Leningrad Leningrad Factory