Sphere's Slide Rule Universe is a repository for information about slide rules, pictures, history and links to sellers, other sites and experts, and an on-line store. Located in Kelowna, BC, Canada.

Instructions on using slide rules, guidance on the price of slide rules and pictures of slide rules.

Membership group dedicated to the history and collection of slide rules.

Slide Rule Collection Explanation of Slide Rule Scales Current Slide Rule Deployment People have asked... What's Your Slide Rule Worth How Much Are You Selling That Slide Rule For AcuMath, USA No. 400 Bruning, USA No. 2401 Concise, Japan Metric Marvel Data Center Model 200 No. 260 Fullerton No. 1450 Controller, Germany Model 75 R Davis Instruments Corporation, USA Time, Speed, Distance ...

Sphere's Slide Rule Universe is a repository for information, pictures, history and links to sellers, other sites and experts, and an on-line store. Located in Kelowna, BC, Canada.

Personal collection of slide rules, along with various resources including general background information, manuals, books, restroration tips, links and more.

Sphere's Slide Rule Universe is a repository for information, pictures, history and links to sellers, other sites and experts, and an on-line store. Located in Kelowna, BC, Canada.

Web site for a collector of slide rules & antique mechanical calculators ***. One thing I have observed while searching for slide rules, people will collect anything.

Dedicated to engineers past and present, this collection of slide rules and manuals have in excess of 1000 different items scanned full size and categorized by ...

David Crate's Quality Used Slide Rules ...

Detailed descriptions and graphic images of slide rules from my collection.

Rechenschieber-Sammler-Treffen ...

Slide Rules - Peter Holland - Rechenschieber ...

I collect slide rules. For those of you who don't remember a time before inexpensive electronic calculators, slide rules are simple but devilishly clever calculating devices. Capable of performing many types of computations, including multiplication, division, logs, antilogs, powers, roots and trigonometric functions, slide rules were once the constant companion of working engineers and ...

Sphere's Slide Rule Universe is a repository for slide rule information, pictures, history and links to sellers, other sites and experts, and an on-line store. Located in Kelowna, BC, Canada.

Slide Rules and Calculators I've a number of slide rules, abacuses and calculators of varying ages and condition. I am beginning to concentrate my efforts on Special-Purpose slide rules: the more obscure the better. Don't expect to find much more at these links than images. I've only bothered to comment on a few of them. If you're really interested and want more details I'm sure you'll contact ...

sliderule-trade: The Slide Rule Trading Group.

Sphere's Slide Rule Universe is a repository for information, pictures, history and links to sellers, other sites and experts, and an on-line store. Located in Kelowna, BC, Canada.

Vintage Instruments offers the largest variety of slide rules for sale anywhere, plus a wide variety of other instruments, including drafting tools, planimeters, ...

Model Airplane Slide Rule calculator for calculating, engine power, wing loading, stalling speed, airspeed, thrust, altitude density ...

Ubersicht uber eine Sammlung mechanischer Rechenhilfsmittel und Rechenmaschinen, Darstellung der historischen Entwicklung, Beschreibung der Funktionsprinzipien ...

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