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International Slide Rule Museum (ISRM)ISRM is the world's largest free digital repository of all things concerning slide rules and other math artifacts.ISRM is an IRS 501(c)(3) (A57 - Science and Technology Museums) non-profit corporation through the State of Colorado. Colorado ID Number 20181884948, IRS EIN 83-2486423. - ISRM Advisory Board of Directors.
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KEEP ISRM FREE! Donations are tax deductable |
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 LibraryScans of slide rule manuals and text books are organized into one of 15 areas:
Addditional Slide Rule ResourcesPreservation Project of Slide Rule Instructions from the ISRM LibraryDownload the Table of Contents of all the Volumes in the Series.Every one of the 540-550 page Volumes captures 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. This continuing project allows the handling of 50-120 year-old paper manuals that were rapidly deteriorating from aging and the elements.
Public Displays and Exhibits News for Friends of the Museum
2023 Annual Fund Raiser - ISRM needs to raise a minimum of $2500 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!
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: International Slide Rule Museum 
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