|Quick Search: Hit CONTROL-F to search THIS page with your browser!|
Slide rule model information, pictures, and history from all over the world
Click REFRESH on your browser if pages seem unchanged
Visit our amazing document server. Everything from Quotes and SciFi to Business and Ethics.
CLICK for WHAT's NEW
|Sphere Research Corporation|
3394 Sunnyside Rd.
West Kelowna, BC, Canada V1Z 2V4
Phone: +1 (250) 769-1834
FAX: +1 (250) 769-4106
A great source for test equipment, repairs, calibrations, useful metrology information, and of course, SLIDE RULES !
JUST SCROLL DOWN TO SEE EVERYTHING !
|International Slide Rule Archives|
In these archives, you can find who made slide rules in every country in the world. This is a cross reference and link index to our existing maker's archives and reference files, organized by country, with short form data added on makers wo do not currently have in full illustrated archive format on line.|
We have the most data on North American, Western European and Japanese manufacturers, and the least on Russian and Eastern European makers. We have NO data on any makers from South America or Africa, if they even exist. Any information you can add to the master index is greatly appreciated, and you can EMAIL WALTER HERE with updates, additions and corrections.
Some companies changed and evolved through different names and identities, these are generally grouped together into the main archive of the FINAL form. While some makers (Dietzgen, for example) used a few rules from Germany, they were principally an American manufacturer. POST primarily used rules from Hemmi in Japan, except for a brief WW2 period, and are more properly a slide rule distributor. Makers are shown in the country where they did most of their business, and manufacturing, although this sometimes becomes complex to determine. Suffice it to say, we have companies located in the their principal place of business, even if they were partially (or wholly) dependent on imported products. There are some interesting surprises and information hiding in the archives, and all of them are worth a quick visit when you have time.
Is the country of origin, trade name puzzle too confusing?
CLICK to see:
What's in a name?
Peek behind the trade name/ buzzword scenes in the slide rule business. A Rose by any other name is a Log Log Duplex Versalog, made by somebody else, and made 12,000 miles away!
|Linkable items have more data on the site.|
|America/USA||Many makers used imported product for some or all of their production at different times.|
|Visit the Dietzgen
|Visit the Keuffel & Esser Company Archive||One of America's largest and best known slide rule manufacturers.|
American Slide Chart
Now with VENDOR
information to get
new rules made!
|Links to current suppliers, plus archive information.|
|Visit the Pickett
|Another major American manufacturer, specialized in metal body rules (first magnesium, then aluminum).|
|Visit the Frederick Post Co., Teledyne-Post Archive||Most rules were from Hemmi, but some from others as well during WW2 and early in the 1900's. Later became Teledyne-POST.|
|Sterling||Relatively low end student rules.|
|Hughes-Owens||See also POST and Hemmi archives, HO sold rebranded rules from Hemmi under their own part numbers.|
|Geotec||Later incarnation of Hughes-Owens, See POST and Hemmi archives, sold rebranded rules from Hemmi under their own part numbers, different from HO part numbers.|
|Logarex||Attractive and well made rules of all kinds, archive coming soon.|
|China||Mainland China, does not include Taiwanese makers.|
|Visit the Flying Fish
|China's state run manufacturer, many specialized rules for industry.|
|Diwa||Many DIWA rules were made as corporate products, often marked with their logos, especially pocket rules.|
|Visit The Blundell-Harling Company Archive||Archive includes Blundell and Harling plus their later amalgamation.|
Plus other unusual rules
|The Otis King rules are the best known and most common cylindrical rules.|
|Visit the Graphoplex
|Graphoplex appears in the USA as Koh-i-noor. Broad product line, with export sales all over Europe and to the USA.|
|Germany||Both East and West Germany are included here, and most companies predate partition.|
|Visit The Aristo Company Archive||Includes Dennert and Pape in the archive.|
|Dennert and Pape||See Aristo archive for details.|
|Visit the Faber-Castell
|Includes A.W. Faber, Faber-Castell, etc. One of the largest makers in Europe. Supplied rules to other companies including Dietzgen in the USA for rebranding.|
| Visit the Nestler
|One of Germany's oldest makers, their high quality rules were used by von Braun and Einstein, among others.|
|Visit the Staedtler
|SM distributed in many countries, and later manufactured in many countries, but most slide rules and the company originated in Germany.|
|Japan||Many products from Japanese makers re-appear world wide under other trade names, especially Hemmi.|
|Hemmi marked their rules with the SUN logo/tradename. Companies world wide sold Hemmi rules under their own trade marks, including POST, Hughes-Owens, etc.|
Seiko Slide Rules You Wear
Slide Rule Watches
|Archive includes other watch makers with slide rules as well.|
|Places to go in the Slide Rule Universe, people to see....|
Click to visit!
|Buy a slide rule from our extensive on line marketplace, with restored classics, amazing new in the box rules, and low cost first student rules. We have something for everybody, even a swap and sell area for visitors.|
Click to visit!
|Learn to operate and care for your slide rule with these on line manuals and directions. Learn what scales mean, how to use them and how to restore or keep your rule in good condition.|
Click to visit!
|Visit other slide rule places on the web with more slide rule data and information. From personal collections on line to (yes, it's really true) the international slide rule owners and collectors organization, the Oughtred Society.|
Click to visit!
|Nice things people have said about us in print and on TV, see the original articles. We always appreciate it!|
Click to visit!
|Visit our TEST EQUIPMENT site everything from Scopes, CRT's and DMM's to nixie tubes, HP and Tektronix spare parts. A little electronic something for everybody.|
E-Mail Us !
You are visitor number
Site Design & contents copyright 1997, 1998, 1999, 2000, 2001, 2002, 2007, 2008 by Walter Shawlee 2 & the ad hoc Godzilla Graphics Group.