• 455 Martinson, Los Angeles
  • 8 (043) 567 - 89 - 30
  • support@email.com
  • Hatters Gauge - for measuring the size of a hat but unusually calibrated in metric & imperial
  • Glovers Rule - for measuring the length of a glove
  • Unusual non-logarithmic squaring desktop QR 41 model by Dennert & Pape (D&P)
  • Colour combinations slide rule for Interior Designers
  • Professor Fuller’s Drum Calculator from 1878 - made by W.F. Stanley
  • Modern Kienzle wristwatch with slide rule bezel calculator
  • Ruxton Multi-Vider 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
  • Design for this Antenna Radar Beam Pattern Detection slide rule was classified during WWII by UK & US governments - made by Lawrence
  • Makeba Kombinator pencil & slide rule
  • Rare Carbic-made Fischer Calculator
  • Specialist slide rule for a national home cable radio broadcasting system offered in The Netherlands in the 1900s
  • Smallest drum (≈ 2.4m) made by LOGA

My stories ....

A dream to write a book for children has yet to happen but as the passion for my hobby took hold so did writing about slide rules and other calculating aids - at least my often light-hearted take on them.

Mostly I publish my articles in the:

  • US: Journal of the Oughtred Society (JOS)
  • UK: Slide Rule Gazette and Skid Stick newsletter
  • NL: Mededeling en Informatie voor verzamelaars van historische Rekeninstrumenten (MIR) newsletter
  • DE: Rechenschieber-Brief electronic newsletter
  • xx: Proceedings of the annual International Meetings (IMs)

All the articles, the most recent first, are listed with a short summary and often extra keywords to aid searching. For any article click on the highlighted link for a PDF download option. Please note some of them are updated/extended versions of the original article.

Use the SEARCH BY KEYWORD option to find topics of particular interest or BROWSE ALL PAPERS to see the full listing - most are in English but the odd one is in Dutch.

Please do email me if you have any comments or questions.

Search for a paper

Currently there are 73 slide rule related articles to choose from.


Tip: separate keywords (implict AND) by a space or a comma and if needed, limit the search by adding keywords proceeded by a hyphen: e.g. -JOS.