International Slide Rule Museum
The International Slide Rule Museum (ISRM) is the world's largest free digital repository of all things concerning slide rules and other math artifacts. As of 2023, ISRM is celebrating its 20th Anniversary! is the world's largest free digital repository of all things concerning slide rules and other math artifacts.
International Slide Rule Museum
EIN: 83-2486423
as of November 2023
as of November 13, 2023
Programs and results
What we aim to solve
ISRM has an extensive archive of slide rule specimens, ephemera and artifacts that need to be categorized, scanned, photographed or documented and made accessible through the online galleries at sliderulemuseum.com. The website currently has over 8000 JPG images and PDF files on display and in its free library download section. Since its inception in 2003, ISRM's website has rapidly become more difficult to navigate because of the manner in which HTML programming codes were implemented and the rapid change in technology of mobile smart phones. Consequently, it had become more difficult to share the ISRM resources. ISRM is in need of paid or voluntary interns to assist the curator in documenting the archive, to ensure that all specimens have suitable accession numbers and have been properly scanned and posted. Additionally, ISRM is in need of a software designer that can help create a new website more in-tune with modern day technologies. A financial trust needs to be created.
Our programs
What are the organization's current programs, how do they measure success, and who do the programs serve?
slide rule loaner program for schools
ISRM provides sets of 25 matching slide rules to be used by educators in elementary through university level, public, private, charter and home schools, to show youth how mathematics was done using logarithmic instruments for the last 200 years. There is no charge to the institutions and their only cost is to return the slide rules by mail after the school term or year depending on the needs of the class. In some cases, for continuing programs, the school is permanently gifted a set.
ISRM provides teaching materials that the students and educators can download at their discretion.
Where we work
External reviews

Photos
Our results
How does this organization measure their results? It's a hard question but an important one.
Number of new grants received
This metric is no longer tracked.Totals By Year
Population(s) Served
Children and youth, Adults
Related Program
slide rule loaner program for schools
Type of Metric
Input - describing resources we use
Direction of Success
Increasing
Goals & Strategy
Learn about the organization's key goals, strategies, capabilities, and progress.
Charting impact
Four powerful questions that require reflection about what really matters - results.
What is the organization aiming to accomplish?
To create a website that meets the demands of modern day users of mobile phones, to ensure the perpetual longevity of the website's information through a financial trust, to preserve the ISRM library and physical specimens from long term deterioration due to aging.
To expand the art of numeracy by assisting educators with resources and physical slide rules to improve their student's math skills in the STEM fields.
What are the organization's key strategies for making this happen?
ISRM needs to be given grants and other means of financial support in order to hire assistants to the curator and to hire web-based software developers to create a new website that is functional on desktops for researchers as well as mobile devices for the casual student.
Most museums do not have the ability to provide the ongoing access that is readily available on the ISRM site, as their collections are buried outside of the view of the general public.
ISRM needs to preserve the thousands of hours and thousands of artifacts that comprise the existing slide rule museum, so a contingency plan needs to be pursued in case of the sudden demise of the ISRM founder, to provide resources that would encourage the integration of ISRM into a like 501(c)(3) organization.
To preserve the aging slide rule instruction manuals and books so that users would be able to handle hardcopy reprinted materials in as close to their original form combined in volumes categorized by manufacturer, country or language.
What are the organization's capabilities for doing this?
At present, the ISRM activities are performed only by the curator, with advice from an ad-hoc board of advisors on a weekly video meeting.
What have they accomplished so far and what's next?
During the pandemic, the curator published 22 volumes of 550 page reference books preserving the images from 400+ slide rule instruction manuals that over time have become fragile and faded. The goal is to provide these hardcover books to public libraries and universities so that the ephemera does not disappear in hardcopy form. Volumes have been provided in English, German, French, Spanish, Russian and Chinese.
Over 400 slide rule specimens still need to be scanned, edited and posted to the website along with other related ephemera.
A local university that has classes in museum studies has been solicited to see if any students are available that need intern work experience and credit hours. The problem is not having class schedules that align with the immediate needs of ISRM's work requirements.
How we listen
Seeking feedback from people served makes programs more responsive and effective. Here’s how this organization is listening.
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How is your organization using feedback from the people you serve?
To make fundamental changes to our programs and/or operations, To inform the development of new programs/projects
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Which of the following feedback practices does your organization routinely carry out?
We act on the feedback we receive, We share the feedback we received with the people we serve
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What challenges does the organization face when collecting feedback?
Financials
Financial data
International Slide Rule Museum
Revenue & expensesFiscal Year: 2022
SOURCE: Self-reported by organization
Revenue | |
---|---|
Contributions, Grants, Gifts | $3,625 |
Program Services | $0 |
Membership Dues | $0 |
Special Events | $0 |
Other Revenue | $1,300 |
Total Revenue | $4,925 |
Expenses | |
---|---|
Program Services | $250 |
Administration | $3,600 |
Fundraising | $0 |
Payments to Affiliates | $0 |
Other Expenses | $1,650 |
Total Expenses | $5,550 |
International Slide Rule Museum
Balance sheetFiscal Year: 2022
SOURCE: Self-reported by organization
Assets | |
---|---|
Total Assets | $2,600 |
Liabilities | |
---|---|
Total Liabilities | $0 |
Fund balance (EOY) | |
---|---|
Net Assets | $2,600 |
Operations
The people, governance practices, and partners that make the organization tick.
Documents
Principal Officer
Michael Vaughn Konshak
Co Principal Officer
Rebecca Konshak
There are no officers, directors or key employees recorded for this organization
There are no highest paid employees recorded for this organization.
International Slide Rule Museum
Board of directorsas of 09/22/2023
Board of directors data
Curator Michael Konshak
Rebecca Ann Konshak
ISRM
Board leadership practices
GuideStar worked with BoardSource, the national leader in nonprofit board leadership and governance, to create this section.
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Board orientation and education
Does the board conduct a formal orientation for new board members and require all board members to sign a written agreement regarding their roles, responsibilities, and expectations? Not applicable -
CEO oversight
Has the board conducted a formal, written assessment of the chief executive within the past year ? Not applicable -
Ethics and transparency
Have the board and senior staff reviewed the conflict-of-interest policy and completed and signed disclosure statements in the past year? Not applicable -
Board composition
Does the board ensure an inclusive board member recruitment process that results in diversity of thought and leadership? Not applicable -
Board performance
Has the board conducted a formal, written self-assessment of its performance within the past three years? Not applicable
Organizational demographics
Who works and leads organizations that serve our diverse communities? Candid partnered with CHANGE Philanthropy on this demographic section.
Leadership
The organization's leader identifies as:
The organization's co-leader identifies as: