Derek's Virtual Slide Rule GalleryA gallery of clickable simulated slide rules.
Pickett N909-ES SIMPLEX TRIG RULE with METRIC CONVERSION
Pickett N3-T POWER LOG EXPONENTIAL LOG LOG DUAL BASE
Pickett N904-T TRIG and DECIMAL KEEPER SPEED RULE
Pickett N525-ES StatRule
Pickett N4-ES Vector-Type LOG LOG DUAL BASE SPEED RULE
Pickett 160-ES MICROLINE
Pickett N600-ES LOG LOG SPEED RULE
If you're not sure about how to use a slide rule, take a look at Slide Rule Calculations by Example (opens in new window). It's a self-guided demo that demonstrates different calculations by simple examples.
UPDATE Apr 2011: Timothy Scott has converted the N600-ES rule to an Android app so it can run on smart phones. Now the virtual N600 is truly as portable as an analog original. The app can be downloaded HERE.
UPDATE Feb 2009: Bob Denny has packaged all the slide rules into a single, self-contained ZIP file, which makes them much easier to use offline. It's no longer necessary to separately save all the various elements as described below. The zipfile can be found HERE.
UPDATE Oct 2007: Stefan Vorkoetter has created a great simulation of a Aristo Multilog Nr. 970 complete with a numeric readout of the cursor position! It's really useful if you're unfamiliar with reading the various scales.
UPDATE Sep 2006: Mark C. Chu-Carroll gives a detailed demonstration of fundamental slide rule operations using the Microline simulator.
UPDATE: The examples page has been translated to Italian by Ezio Raddi. Thanks Ezio!
UPDATE 2: The examples page now explains how to raise numbers to powers with log-log scales.
UPDATE 3: Jonathan Foote scanned and emailed an old four-pager, HOW TO USE YOUR PICKETT SLIDE RULE. It's a beginner-oriented document, but it's goes into some details about how to read the scales and what the tick-marks mean. Here are the pages as jpg files: 1 2 3 4 .
If you feel confident in your slide rule skillz, maybe you'll be interested in some Slide Rule Tricks.
This gallery made possible with Drag & Drop for Images & Layers.
Would there be any chance of producing the simulations as freestanding applications, able to operate without access to the internet? So that instead of calling up a calculator to do a little calculation, I could call up a slide rule. C.C., AustraliaANSWER:
Can I translate your page "Slide Rule Calculations by Example" on slide rules to the Italian language, with your permission? I'll refer you as original author (with link to your page if you want). I am an Italian slide rule collector. Thank you very much for your courteous answer, E.R., ItalyANSWER:
Hello E. R., Yes, go right ahead. Once your page is done, let me know, and I'll put a link to it. (I still have to do an explanation of log-log scales. When that's done, I'll send you an email.) Derek.
Thanks, Derek, for making it so easy for me to demonstrate to my sons how we did math in the old days! Your site is very math-fun, with the slide rules that are so very life-like. I can almost feel the glide of the cursor! Great Work! D. B., MichiganANSWER:
Thanks, D., I'm glad you liked it! Slide rules were a great invention, I hope everyone gets to try one at least once, to see how elegant yet powerful they were. I gave my 3 year old kid an old wrecked Pickett. He just swings it around now, but I'm hoping he'll get the concept of numbers and scales "imprinted" in his mind... maybe it'll help him with his math when he's older (???). Once again, thanks for the encouraging words! Derek Winnipeg, Manitoba
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