The Slide Rule Universe, literally everything about buying and using slide rules, sliderules and sliderulers!
YES, we now have lots of NEW BOXED sets, see CLICKHERE and CLICKHERE.

Welcome to the Slide Rule Universe!
Welcome to the Slide Rule Universe!

Original Artwork by: Larry Stewart, The Slide Rule Universe is a trademark of Sphere Research Corporation  IMPORTANT! Shipping Costs go UP significantly now each year,
so please see full details in our FAQ.

Download the classic K+E Pocket Slide Rule Selection guide below!

CLICK for Front
CLICK for Back

CLICK for Front
CLICK for Back
 At the Slide Rule Universe you can buy slide rules of all kinds
CLICK ON THE PICS BELOW to see the Main Categories:

Just Scroll DOWN to see everything!
CLICK to visit Sphere Research Corporation   https secured site-wide
Https Secured Site Wide For Your Protection
Sphere Research Corporation
3394 Sunnyside Rd.
West Kelowna, BC, Canada, V1Z 2V4

Phone: +1 (250) 769-1834

A great source for test equipment, repairs, calibrations, useful metrology information, and of course, SLIDE RULES!

May 23, 2023

Click REFRESH on your browser if pages seem unchanged

What's NEW on the site?Click Here
to see What's New!

CLICK to see what's new

CLICK for Slide Rule Pins and Tie Clips!
Slide Rule Pins & Tie Clips
CLICK to see New In the Box Pickett Slide Rules!
New in the BOX
NIB Rules

CLICK to see Circular Slide Rules!
Circular Slide Rules

CLICK to see New In the Box Slide Rules!
New In the BOX
NIB Rules

CLICK to see Used/Full Sized Slide Rules
Used Full Size Slide Rules

CLICK for Cheap/Student Slide Rules!
Cheap & Student Slide Rules

CLICK for Exotic Slide Rules!
Exotic Slide Rules

CLICK for Slide Rule Books!
Slide Rule Books

CLICK to see Pocket Slide Rules!
Pocket Slide Rules

CLICK for Drawing Tools!
Drawing Tools

CLICK for Slide Rule Repair parts!
Slide Rule Repair Parts

CLICK for New Slide Rule Cases!
New Slide Rule Cases & Stands

+ Plus, you can do all of these things:

CLICKLEARN to USE & CLEAN your slide rule, with lessons and manuals

CLICKTOUR our vast slide rule maker / style ARCHIVES

CLICKVISIT other sites & people on the web

CLICKBUILD a slide rule from scratch, even a Log Log rule


CLICKSLIDE RULE SOFTWARE (What?) great free learning tools

Got Some Questions? We have the answers!
Please see our
CAUTION!Slide Rule Collecting can be addictive!
See this important product warning!

Another Larry Stewart Original!
You can order anything here just by picking up the phone, and calling (250) 769-1834 during normal office hours, 8:30AM to 4:30PM PST, OR, Email your order to Susan CLICKHERE.

Shipping*SHIPPING: Preferred and Alternate Methods CLICK for FULL DETAILS ON OUR FAQ Page. Rates are now changing rapidy, often with little notice to us, so all the data has been transferred to the single FAQ page for speedy updating.

* E-Mail Susan if you want a quote for shipping to other destinations, or for something heavy. Sorry, we can't safely send most individual small parts in a regular letter envelope, they get destroyed by the automated handling equipment. Sometimes we can ship very rugged parts in a small padded envelope by letter post. Ask Susan.

*If we have your valid data on file, you can just click on the ORDER email link to place an order and indicate your approval to bill, and we will do the rest. We keep your active information for ONE YEAR for your convenience.

*If this is the first time you have dealt with us, you can phone +1 (250) 769-1834 to supply the billing info, or send it by the email link, as you prefer. We accept VISA/MC, international money order, Paypal (to, and bank wire transfer. Please note that there are transaction fees with Paypal and wire transfer payments, the wire transfer fee is frankly horrifying, $50.

Sphere Research has been around since 1992, and does most of its business doing contract research and development for customers in everything from complex system controls and human factors to industrial automation. We also have odd corporate interests, like restoring test equipment, and of all things, investigating slide rules, the most fascinating of all engineering marvels...

At this site, you can get detailed information and buy rules from manufacturers all over the world, including K+E (Keuffel + Esser), Pickett, POST, Hemmi, Sama and Etani, Gilson, Graphoplex, Dietzgen, Concise, Aristo, Shanghai/Flying Fish, Otis King, Sterling, Acu-Math, Diwa, Blundell, Faber-Castell, Nestler, Staedtler-Mars and more. We have collected data, rules and photographs from all over the world and with the help and research efforts of many people, put them together here for you in one (hopefully) easy to navigate location.
*** Over 1.3 Million visitors served! Wahoo...
red panda magic We have MUGS! CLICK to SEE!
We have MUGS!

Keep in mind, in 50 years, the computer you are using to view this webpage will be landfill, but your trusty slide rule will just be nicely broken in!
     Our SRU Mascot      Notable Visitors:
Whenever you see Robby the Robot, you can click on him to return to this navigation page! Joe Pasquale, Visitor 100,000!
Chris Redding, Visitor 150,000!
Kelley Durski, Visitor 200,000!
Mike Yancey, Visitor 250,000!
Mark Lukey, Visitor 300,000!
Tommy Frandsen, Visitor 350,000!
Mike Wei, Visitor 400,000!
Michael Rowley, Visitor 500,000!
Ron A. Knapp, Visitor 550,000!
Charles F. Crizer Jr., Visitor 750,000!
Richard Guy, Visitor 800,000!
Steve Kay, Visitor 900,000!
Sean R. Wilkinson, Visitor 950,000!
Giovanni Breda, the 1 Millionth Visitor!
Michele T. Mazzucato, Visitor 1,050,000!
Benjamin Harrison Millard, Visitor 1,234,567!

Visit the Doument Server! Visit our amazing document server when you have a chance. Everything from Quotes and SciFi to Business and Ethics.

At the SLIDE RULE UNIVERSE, we have all kinds of information about slide rules (or sliderules, and sliderulers, if you prefer) including lessons, maker's archives, links and an on-line marketplace, spare parts page and even an auction.
Other Places to go in the Slide Rule Universe, people to see....
CLICK to Learn about your slide rule!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 slide rules in good condition.
CLICK to visit the Slide Rule Archives!Tour our extensive archives of slide rule manufacturers and models from all over the world. Find out who made what, and what became of them after they stopped making slide rules. See how slide rules survive today in the form of slide charts still made in the millions annually.
CLICK to visit our LINKSVisit 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 the MarketplaceNice things people have said about us in print and on TV, see the original articles. We always appreciate it!
CLICK to visit the Test Equipment Site!
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 or another for everybody.

NEED a new BOXED slide rule for school, graduation or for a holiday gift ?
CLICK HERE to go to the New Boxed PickettsLOOK HERE for Picketts

CLICK HERE to go to the Other NIB RulesHERE for Other NIB rules

CLICK HERE to go to the CHEAP RulesHERE for inexpensive starter slide rules!

Customs can be very unpredictable, so to avoid unhappy shipping delays, please order rules for gifts as early as possible. We will happily ship FedEx for overnight or second day delivery if you are in a hurry.

E-mail us
Got Questions? Just E-Mail Us !

Created by the ad hoc Godzilla Graphics Group Site Design & contents copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 by Walter Shawlee 2 & the ad hoc Godzilla Graphics Group. The Slide Rule Universe top banner artwork created by Larry Stewart.
Return to Sphere's Home Page Return to Sphere's Home Page

Want to buy a rule, but you live far away from us in Canada? Don't worry, we have shipped slide rules to:

USA, UK, Germany, Greece, Ireland, Sweden, Italy, Brazil, Mexico, Norway, Switzerland, Peru, Chile, Singapore, Phillipines, Australia, New Zealand, Spain, Netherlands, Venezuela, and yes, actually to Antarctica!