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ISRM Android App
For all those concerned: The ISRM Archives survived the Marshall Fire in Boulder County Colorado on Thursday, December 30. Although 1400 structures were lost in Superior and Louisville, ISRM was a half mile away when the 100+ MPH winds stopped. That evening the storm front dropped 8 inches of snow on the area. Life (for ISRM) is back to normal. Thankfully, we preserved the ISRM library for such an event in the ISRM Slide Rule Instructions Library (22 Volumes) on Amazon, but archives would have been lost. |
Click the Slide Rule for Introduction,
ISRM Mission Statement, and Donation Policies.
Visit What's New! for the latest additions to the galleries and changes to the website.
ISRM is best viewed on a desktop. Clear your browser cache often CTRL+F5
Slide Rule Galleries
All slide rule specimens, scans, photos and ephemera are organized into one of 51 galleries; by major
manufacturer, construction style, country/region, time period or application. Scroll down on the MENU on the left to go directly to a particular brand or to see other data.
Slide Rule Library
Scans of slide rule manuals and text books are organized into one of 15 areas:
Addditional Slide Rule Resources
New - Slide Rule Instructions from the ISRM Library
Download the Table of Contents of all 22 Volumes.
Every one of the 540-550 page Volumes contain most of the popular models from each of the brands, and are
available in paperback or hardcover on Amazon, which will print to order in 7 countries. Click on the covers
to go to the relevant page on Amazon to review and purchase the Volumes.The small royalty goes to support ISRM.
News for Friends of the Museum
NEW MEET ID!! On-line virtual face-to-face coffee.social get together.|
Three times/week. Two times on Wednesday and once on Saturday
The meeting are put into three sessions because of Google Meet's one-hour limitations on a free account (Google will give use a 5-minute-warning as the end approaches):
Or use a tiny URL link, which is easy to remember:
- 2nd shift: WED. at 9 PM Mountain Time (4 AM UTC THU.)
- 1st shift: WED. at 9 AM Mountain Time (4 PM UTC WED.)
- Weekend 3rd shift: SAT. at 9 AM Mountain Time (4 PM UTC SAT.)
|1 donors 25% of goal
|| as of Jan 4, 2022
2021 Annual Fund Raiser - ISRM needs to raise a minimum of $2000 annually, necessary for its programs, exhibits,and ongoing web maintenance. All donations are tax deductable. In our 19th year of being on-line, we have data being downloaded from 118 countries, all at no cost to you! There are no paid staff members, but we need help in keeping ISRM growing and on-line during these challenging times. In 2011 ISRM established a FRIENDS OF THE MUSEUM page to acknowledge its many supporters. You can become a TIER 1 FRIEND OF THE MUSEUM by your donation through Paypal or by check. You can also help by participating in ISRM's Slide Rule Rescue program where you can adopt slide rules. Note that ISRM is a 501(c)(3) non-profit so cash donations are tax deductable. Thank you for your welcome support and kind consideration!
Mail checks or donated items to: ISRM, 1944 Quail Circle, Louisville, CO 80027, USA.
You can purchase t-shirts, mugs & gifts with the ISRM Logo from the museum's souvenir shop.
NEW! You can get custom wall clocks with images of popular circular slide rule models. These were inspired by the Friends of the Museum that come to the weekly social hours. So far ISRM has created face of Gilson (yellow and green), Concise 270N, Pickett 110-ES, Alro 100R, Dalton Dead Reckoning Computer E6-B (White and Black) and the B-47/B-52 Air Nav & Bombing Computer, as well as clocks using the ISRM logo.
Students from the Collège André-Grasset in Montreal, Canada using slide rules donated by ISRM. Click on the banner for more information.
Dr. Barbara Rooker of the Joplin, Missouri K12 School System, introduced students to slide rule math during 2009 using ISRM's free loaner program. Click banner for more pictures:
Copyright © 2003-
International Slide Rule Museum
VISITORS FROM AROUND THE WORLD
Proud Member of|
Invented the Logarithm in 1614
Inventor of the Slide Rule
Victor Amédée Mannheim standardized modern scales
DUPA (Aristo) Class Germany
Englewood (NY) High School Students
IIT Elect. Engineers
Iowa State SR Class
1950 African-American Students.Prarie View, TX. Texas A&M
1952 Edwards AFB
Test Pilot School
1954 Hamburg, Germany
1956 Edwards AFB
Test Pilot School
1957 Robert Herndon, Aircraft Engineer (Life Magazine)
1965 NCF Math Class
1969 Buzz Aldrin on Apollo 11 Moon Mission (NASA)
1970 Colorado School of Mines
1976 Joe Pasquale (right)
1980's "Startrek" TV Re-Runs
1995"Tuskegee Airmen" Movie Scene
1997MIT SR Class
2006 UCSD SR Intro