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Vignettes – 37 short articles and stories about slide rules, calculations, and collecting
Last Update Vignette Title
2024 Jan 31 America’s Earliest Part II
2024 Jan 10 How Do You Byoutou?
2023 Dec 27 American Favorite Part II
2023 Dec 14 Gauging Electro Rules
2023 Nov 24 Scale Wars
2023 Oct 25 Kolesch Rules
2023 Sep 25 Thacher’s Calculating Instrument
2023 Aug 11 Following the Balloons
2023 Aug 05 Chicago Rules
2023 Jul 10 K+E Mystery Rules Update
2023 Jun 27 Carpenters vs. Engineers
2023 May 29 Dietzgen Rosenthal Nestler Prototype
2023 Apr 22 Slide Rules for the Sikes Hydrometer
2023 Apr 08 Gauging and Excise Tax Slide Rules
2023 Mar 10 America’s Earliest Slide Rule
2022 Dec 23 Spring Calcs Eternal
2022 Dec 10 Out of Proportions
2022 Jun 20 Vector/Hyperbolic Calculations
2022 Jan 05 Stadia Rules
2021 Dec 12 Helical Slide Rules
2021 Dec 05 The Early American Favorite
2021 Oct 25 Power Rules
2021 Oct 03 Lt. Shaw’s 4097D
2021 Oct 02 Rule Change 4092-3
2021 Aug 10 K+E Beginner’s Rules
2021 Jul 01 An Early Home-Made Spring Calculation Slide Rule
2021 Jun 20 A K+E Rule of Mystery
2021 May 15 British Thornton Special Scales
2021 May 01 Getting to the Root
2021 Mar 01 The Long and Short of It
2021 Feb 08 Hemmi 153 Scales
2021 Feb 06 A Boykin Discovery
2021 Feb 05 Fermi’s Golden (Slide) Rule
2021 Feb 04 Rules of Engravement
2021 Feb 03 The Original 4083
2021 Feb 02 Rules to the Moon
2021 Feb 01 A Favorite Rule


New to slide rules? – What is a slide rule? What is a logarithm? How do you use a slide rule? What do all the scales mean? – Let’s get started ! Returning to the site? New Rules!
Collection Photos – a chronological look at the slide rule collection Special Groupings – subgroups, such as oldest, youngest, most scales, specialty slide rules, …
Rule Makers – The collection, organized by manufacturers
A Searchable Table of the entire collection A Data Sheet for each rule

Review Material:

A Review of the Logarithm Slide Rule Basics Slide Rule Scales References


Welcome!

This DataFrame-driven web site presents a personal collection of slide rules as well as other useful information about slide rules, their operation and use. Click the arrows (> and <) on each page or use your keyboard’s arrow keys to move between pages. Use the left navigation pane to go directly to a particular chapter or subject.
-Mike Syphers


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The Oughtred Society United Kingdom Slide Rule Circle International Slide Rule Museum
18 February 2024