Slide Rule Gift Shop
Duplicate Slide Rules, Parts, Manuals and Books.
Opportunities to support ISRM's Mission

Donations are
tax deductable
Duplicate Slide Rules at ISRM All purchases and fees on this page go toward maintaining the museum website and supporting the Slide Rule Loaner Program for Schools. The specimens they replace, however, may be items in the fund raiser. The recommended fee is based on the average total cost of ebay sales for similar specimens over the past two years. 100% satisfaction. All returns accepted, just pay return postage. If you wish to contact me directly and offer a different amount, we will work with you to serve both our needs. Call the Curator, Michael Konshak, at 303-921-8709 days and evenings

View the available duplicate slide rules

View the available Books, Manuals and Ephemera

View the available slide rule parts (Cursors and screws)

Hemmi and Post
K&E Keuffel and Esser
Restoration - 3-D and laser cut parts
OEM Sleeves/Cases/Boxes

Adoption Instructions

  1. View the list of the slide rule candidates for consideration. The file has hyperlinks to the exact model shown in the gallery for your comparison. In most cases, the duplicate slide rule is as good or better than the ISRM archive specimen. Exceptions are noted.
  2. Make a list of the slide rules that you desire.
  3. If you wish to make a counter-offer to the recommended adoption fee, email the curator with your list and offer.
  4. Total up the recommended adoption fees for each item plus the shipping fee, and enter it in using the Secure Donation button on the right.
    • Single and multiple small slide rules can normally fit in a USPS Padded Flat Rate Envelope (9-1/2" x 12-1/2") for $9.00
    • Multiple 10 inch slide rules, up to 25 pieces, can normally fit in a USPS Flat Rate Box (11" x 8-1/2" x 5-1/2 or 13-5/8" x 11-7/8" x 3-3/8") for $18.00
    • Please include your mailing address in an email or in the Paypal notes, as Paypal will not include it
    • International Adoptions: Individual slide rules can be shipped outside the United States for $36.70 using a USPS Priority Mail padded envelope.
  5. Email or call Michael, if you run into problems please.
It takes a bit of time for the Curator to respond so, if for some reason, the slide rule has already been adopted, you'll be emailed to see if there is another slide rule that you want to rescue, switch to a direct donation, or get a refund. Personal checks are also accepted. Thanks for your support!

The Secure Donations button allows you to direct your donation to the following ISRM programs.

  • Slide Rule Adoption Fees
  • Gift from Friends of the Museum
  • Free File Downloads Gratuity
  • Cash Gift - New ISRM Friend
  • School Loaner Program Support

Use the secure button, and include a donation for shipping costs List the items by ISRM reference #. in the message to curator.

ISRM Souvenir Shop

You can now buy t-shirts, mugs & gifts with the ISRM Logo from the museum's souvenir shop hosted by Cafe Press.
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International Slide Rule Museum