  Math teacher Sharon Hessney's class at Milton High School, Milton, MA. The students also created scales to make their own paper slide rules.  Professor Paul Guertin at Collège André-Grasset in Montreal, Canada uses slide rules provided by ISRM for his introductory calculus class to introduce logarithms to the students. Click on the banner for pictures. |
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If you are an educator wishing to give your students a hands-on experience and instruction with
actual slide rules in order to introduce the importance of logarithms, the museum is able to supply quantities of 25 or more matching slide rules for temporary use, free of charge, courtesy of several collectors and members of the Oughtred Society, the German Rechenschieber.org and the Dutch KRING. Mixed sets are available for those wishing to just show their students a variety of slide rules that were produced all over the world. Requests from individual teachers on school letterheads, (either by mail or electronically scanned) must be received before the slide rules will be shipped. However, for rush orders, an email with the school's website will suffice to verify that the contact is on staff. ISRM (or the associate members outside the USA) will pay for the shipping to the school and the teachers will be responsible for the return postage (in the USA Priority Mail Flat Rate box is currently $10.30) and safe return of the slide rules. We ask that you commit to taking digital pictures of the students using the slide rules (our only compensation). Now that we have more sets, slide rules may be kept for one semester (or less), but one year terms may be accomodated, depending on availability. Give us a week to get these out after I get the request letter. Students - Get your school or teacher to request loaner slide rules for your class, a seminar, or other school activity and receive a FREE SLIDE RULE that you can keep for your very own. You must be the first in your class to initiate contact, by email saying you are going to present the idea to your teacher(s). If you are succesful, you can choose your slide rules from a list of available models, and I (or an associate in another country) will send it out when the loaner slide rules get mailed to the teacher, marked as a gift for you to keep. Home Schoolers - I can also supply one or more slide rules for your children at home. Feel free to contact me.
1944 Quail Circle Louisville, CO 80027, United States Evenings:303-673-9853 Days/Cell:303-921-8709 or email:  If you are a collector that wishes to participate in this program, out of your abundance, please let us know. We are looking for more international contacts. If you are willing to host a program in your country, but do not have the SR's needed, we will help arrange to provide you with sets (membership in the Oughtred Society, KRING, RST or UKSRC required). If you wish claim the donation on your taxes you will enter the recipient of the gift as the Oughtred Society, who is supporting this effort and is a 501c3 non-profit corporation. See Policy. The SR's should then be sent directly to ISRM as the recieving agent so we don't have to mail them twice. . The Oughtred Society will send you a receipt for the donation if you request one. Contact Clark McCoy email: clarkmcoy2[at]comcast.net and let him know what you sent. There will be no value assigned, that is up to you.
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 Delta V Club uses ISRM slide rules to design rockets at St. Vincent de Paul Elementary, Petaluma, CA
Scale Recomendations: Elementary students need basic scales K, A, B, C, D Geometry and pre algebra students also need S, T, ST, CI, CIF Algebra II and Physics also need LL0, LL1, Ll2, LL3, DF, DI, etc. Past and Current Participants: 
Ouachita Hills Academy in Amity, ARHarvard College in Arlington, MA, Hawthorn Middle School North in Vernon Hills, IL Frontier Regional School in Deerfield, MA New York City College of Technology in Brooklyn, NY Oasis Christian Academy in Winter Haven, FL South Brooklyn Community High School in Brooklyn, NY Covenant Classical School in Concord, NC Northwestern Regional Juvenile Detention Center, Winchester, VA Hood College in Frederick, MD Chattanooga School for the Arts and Sciences in Chattanooga, TN Northwood High School in Silver Spring, MD (3 time user) South Middle School in Joplin, MO ETON Academy in Birmingham, MI St. Vincent de Paul Elementary School in Petaluma, CA (3 time user) Half Hollow Hills High School in Dixhills, NY , Anderson High School in Cincinnati, OH Westfield High School in Chantilly. VA South Central Charter Essential School in Fitchburg, MA Cowherd Middle School in Aurora, IL Thornton Township High School in Harvey, IL (2 time user) 
College Andre-Grasset, Montreal, CanadaUniversity of Waterloo, Ontario, Canada; 
HANSA Handelsschule in Reichenbach and Zwickau, Germany. (Fall 2009) |
Loaner Sets for use in North America
Set 1 - Acumath 401
Acu-Math 401 Mannheim Trig Slide Rule Set with scales: K, A, B, T, ST, S, C, D, DI. 25 SR's provided by George Keane, Missouri. |
Set 2 - Acumath 400
Acu-Math 400 Slide Rule Set with scales: S, K, A , B, CI, C, D, L, T. 9 SR's provided by Tom Miller, Brian Hanvey, David Hecht, Mike Konshak, Stephanie Huang, Robert L. Allison. |
Set 4 - K&E Duplex SR's
Duplex Log-Log Decitrig. Includes K&E Models 4080, 4081, 4092, 9081, 4141 and Dietzgen 1732. K, A , B, T, ST, S, D, DI and: DF, CF, CI, C, D, L , LL0, LL1, LL2, and LL3. Some with LL02, and LL03. 18 SR's (need more) Provided by Mike Konshak, James D. Clark, Ted Hume, John R. Farley, David Hecht, Dan Boone, Richard Schember, Richard Davis and Ricki Nakamoto. Cursors used to repair these were provided by the generosity of Darwin Williams. | |
Set 6 - Aristo 903
Aristo 903 Mannheim Trig Slide Rule Set with scales: L, K, A, B, BI, CI, C, D, S, ST, T D, DI. 25 SR's provided through the members of the Oughtred Society. |
Set 7 - Aristo 903
Aristo 903 Mannheim Trig Slide Rule Set with scales: L, K, A B, BI, CI, C, D, S, ST, T D, DI. 25 SR's provided by the members of the Oughtred Society. |
Set 8 - Nestler Elemath RS
Nestler Elemath Duplex Advanced Slide Rule Set. Scales: K, A, B, CI, C, D, L and: T1, T2, DF, CF, CIF, CI, C, D, S, ST. 25 SR's provided by the members of the Oughtred Society. |
Set 9 - Nestler Elemath RS
Nestler Elemath Duplex Advanced Slide Rule Set. Scales: K, A, B, CI, C, D, L and: T1, T2, DF, CF, CIF, CI, C, D, S, ST. 10 SR's provided by the members of the Oughtred Society. |
Set 10 - Fedra Log-Log
Duplex Slide Rule Set Fedra Log-Log with Instructions Scales: K A [ B CI C ] D L and Cm S ST T LL1 LL2 LL3 inch 25 SR's provided by Skip Zogopoulos, Exeter, NH
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Set 11 - Fedra Log-Log
Duplex Slide Rule Set Fedra Log-Log with Instructions Scales: K A [ B CI C ] D L and Cm S ST T LL1 LL2 LL3 inch 25 SR's provided by Skip Zogopoulos, Exeter, NH
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Set 18 - Fedra Log-Log
Duplex Slide Rule Set Fedra Log-Log with Instructions Scales: K A [ B CI C ] D L and Cm S ST T LL1 LL2 LL3 inch 30 SR's provided by Skip Zogopoulos, Exeter, NH
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Set 19 - Fedra Log-Log
Duplex Slide Rule Set Fedra Log-Log with Instructions Scales: K A [ B CI C ] D L and Cm S ST T LL1 LL2 LL3 inch 25 SR's provided by Skip Zogopoulos, Exeter, NH
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Set 20 - Post Versalog 1460
Post Versalog 1460 Front Scale: LL/1, LL/2, LL/3 [ T/T, SecT/ST, Cos/S, C ] D, LL3, LL2, LL1
Back Scale: LL0, LL/0, K, DF [ CF, CIF, CI, C ] D, R1, R2, L
SR's Provided by members of the Oughtred Society and Mike Konshak, Ted Hume, James D. Clark, Clay Castleberry, David Hecht, Ricki Nakamoto, Stephanie Huang. |
Set 21 - Pickett Mannheim
Pickett Mannheims Models 80(6),120(4),120T-W(6),120T-Y(8),121(3),121T(2),125(1).
Scales: T K A B CI C D L S (Scale arrangements vary) |
World's Best Slide Rules
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Canada Looking for an associate to host SR's in Canada. Mexico Looking for an associate to host SR's in Mexico. |
International Loaner Sets (need UK, Europe and Asian contacts)
Australia Set 5 - Fedra Log-Log 
Duplex Slide Rule Set Fedra Log-Log with Instructions
Scales: K A [ B CI C ] D L and Cm S ST T LL1 LL2 LL3 inch
Contact: Robert Adams |
Netherlands Set 12 - UTO 930 Studium  Duplex Log-Log Slide rule Set, UTO 903 Studium, with scales: LL01 LL02 LL03 A [ B L K C ] D LL3 LL2 LL1 and ST T T2 DF [ CF CIF CI C ] D DI P S. Up to 35 SR's provided by IJzebrand Schuitema. Administered by Otto van Poelje.
Contact: Otto van Poelje |
Netherlands Set 13 - Faber-Castell 52/82  Duplex Log-Log Slide rule Set, Faber-Castell 52/82 Stab, with scales: L K A [ B BI CI C ] D LL1 LL2 LL3 and T T2 DF [ CF CIF S' C ] D S ST P. Up to 35 SR's provided directly by Otto van Poelje
Contact: Otto van Poelje United Kingdom  Looking for an associate to provide SR's in Great Britian. |
Japan
Set 16 - Hemmi 45K
Mannheim Slide rule Set, Hemmi 45K, with scales: K DF [ CF CI C ] D A and [ T1 L S1 ].
Contact: Hitoshi Nori |
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Germany/Deutschland Set 14 - Faber-Castell 52/82 With Overhead Projection Rule Duplex Log-Log Slide rule Set, Faber-Castell 52/82 Stab, with scales: L K A [ B BI CI C ] D LL1 LL2 LL3 and T T2 DF [ CF CIF S' C ] D S ST P. 25 SR's with optional 52/80 overhead projector SR, provided directly by Dr. Klaus Kühn
Contact: Peter Holland |
Germany/Deutschland Set 15 - Faber-Castell 52/82 With 2 Meter Demonstration Rule Duplex Log-Log Slide rule Set, Faber-Castell 52/82 Stab, with scales: L, K, A, [ B, BI, CI, C ] D, LL1, LL2, LL3, and T, T2, DF [ CF, CIF, S', C ] D, S, ST, P. 25 SR's with an optional large 2 meter 52/82 demonstration rule (different scales), provided directly by Dr. Klaus Kühn
Contact: Peter Holland |
Germany/Deutschland Set 16 - Graphoplex 1600
System Rietz set with scales: 27cm // L, T>45° Cot, A [ B, K, CI, C ] D, S Cos, ST, T<45°, Cot. 20 SR's provided directly by Dr. Klaus Kühn
Contact: Peter Holland |
Germany/Deutschland Set 17 - Graphoplex 1694
Graphoplex 1694 Techni-Math with scales Scales: 27cm // P,K,A, DF [ CF,L,CI,C ] D, S, SRT, T. 30 SR's provided directly by Dr. Klaus Kühn
Contact: Peter Holland |
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Slide Rule SeminarUse this downloadable Self-Study Course on your computer or as part of a classroom seminar. Ms. Leor Baldinger, Math teacher at Northwood HS in Sliver Spring, Maryland, found it very effective in helping her honor students to become proficient with slide rules and to improve their cognitive math skills. This is a 4 MB PDF version of the ISRM SR_Course web page. |
Click the banner below to see more pictures of Isaac Bumgardner's who wanted to introduce his advanced Calculus,
Linear Algebra and Algebra (future engineering) students at Westfield High School (Chantilly, IL) to slide rules.:
Click the banner below to see more pictures of Dr. Barbara Rooker, Joplin, Missouri,
K-12 math students:
Click the banner below to see more pictures of Ms. Baldinger's Northwood High School
math students:
Click the banner below to see the write-up on the KIX-2011 exhibit at the University of
Waterloo Art Museum, Ontario, Canada:
Professor Joe Pasquale's Freshmen and Senior Slide Rule Seminars at University of Californaia, San Diego (UCSD)
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When faced with a new school year and the establishment of a new set of professional goals, Dagmar Rutzen, Algonquin Middle School science teacher, set a plan to incorporate her interest in math and slide rules into her science classes. Since science labs lend themselves to a lot of number crunching, Rutzen knew that the use of slide rules would strengthen her students’ math skills. Any time measurements are taken during labs, the class will discuss significant digits and why the calculations are accurate only to a certain point. The class is involved in front-end estimation, so the answers are unknown. Learning to use a slide rule has also reinforced place value, estimation and significant digits. Rutzen has found that students are eager and willing to take chances to share answers in classes. Students who correctly find the answers are willing to help other students in the class.
