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 Free Slide Rules + Other Stuff
CLICK to return to The Slide Rule Universe Last Updated:
June 21, 2019


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Sphere Research Coporation, CLICK to visit! 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!
EMAIL US!Want something? e-mail us!
Go to Our FAQOur FAQ !! Answers to all those questions.
Visit the Document Server!Visit our amazing document server. Quotes & SciFi to Ethics & Business.
Just SCROLL DOWN to see everything!
Click to See What's NEW...... Welcome to the Slide Rule Universe! OPEN 24/7, CLICK to visit the Marketplace! CLICKCLICK HERE
CLICKTo Visit The S/R Marketplace
   I'm in a HURRY! Show me all the: CLICKNIB Rules CLICKNIB Pickett Rules CLICKPocket Rules CLICKCircular Rules


Robby the Robot, our stalwart Mascot...
Back To SchoolHere's some useful Free Stuff you may find handy.

NEED Study materials and no budget?
Just CLICK HERE to get a treasure trove of digital manuals free courtesy of The Oughtred Society.
Free for EVERYBODY!
The Data-Guide SLIDE RULE GUIDE ((C) 1956)
Just CLICK on each image to download to your machine!
CLICK for Hi-Res JPG
Slide Rule Guide Page 1, CLICK for bigger PIC!
Slide Rule Guide Page 1, CLICK for bigger PIC!
Covers set up and use of all rule functions
from multiplication and division to roots and logs.
A wonderful and concise set of directions from over 50 years ago!
CLICK for Hi-Res JPG
Slide Rule Guide Page 2, CLICK for bigger PIC!
Slide Rule Guide Page 2, CLICK for bigger PIC!
Covers set up and use of all rule functions
from multiplication and division to roots and logs.
A wonderful and concise set of directions from over 50 years ago!


CLICK to visit the Slide Rule Marketplace
Click to visit!		 CLICK HEREBuy 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 Learn about your slide rule!
Click to visit!		 CLICK HERELearn 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 our LINKS
Click to visit!		 CLICK HEREVisit 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 Marketplace
Click to visit!		 CLICK HERENice 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!
Click to visit!		 CLICK HEREVisit 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 Created by the ad hoc Godzilla Graphics Group You are visitor number dotdot.
Site Design & contents copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011, 2013, 2017, 2018, 2019 by Walter Shawlee 2 & the ad hoc Godzilla Graphics Group.

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