# Where can I buy Napier's Bones/Rods? [closed]

I'm not sure this is the best place to ask, but it is math related. Where can I purchase Napier's Bones (rods)? I've been searching around the web and I haven't really been able to find anywhere that sells them.

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## closed as off-topic by Yemon Choi, Andrey Rekalo, Chris Godsil, Karl Schwede, Ramiro de la VegaSep 3 '13 at 18:19

This question appears to be off-topic. The users who voted to close gave this specific reason:

• "This question does not appear to be about research level mathematics within the scope defined in the help center." – Yemon Choi, Andrey Rekalo, Chris Godsil, Karl Schwede, Ramiro de la Vega
If this question can be reworded to fit the rules in the help center, please edit the question.

Avoid the website mentioned in answer number 2 above. I make presentations at rendezvous all over the Midwest and at my seminar I demonstrates Napier's Bones. I, unfortunately, bought a set from an eBay dealer who sells the very same set, http://www.uniquecanes.com. The construction was terrible. The rods were not even square. The tabulat's index rod was not square to the tabulat, and the silk-screen printing did not align correctly, especially for the square root and cube root rods. The box the set came in, however, was well constructed. I had a great deal of difficulty trying to convince "ajsfixit" to make amends. He never did. the price of the set was approx $80,but I think it is now available for around$45. Finally, the set is not a replication of Napier's Rods, if you're interested in historical accuracy. My recommendation: depending on how authentic you desire, study up on the rods via Google and then have a local craftsman make a set for you.

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@Don Frisby, you forgot the closing '$' after the 80 in your answer, so the LaTeX markup turned all the text between 80 and 45 into italicized math font. – sleepless in beantown Sep 28 '10 at 15:20 "$5" test latex –  sleepless in beantown Sep 28 '10 at 15:21
Hmm, trying to point out to you how to correct the latex markup is showing me that the comments come out with huge lengths of LaTeX markup which render the comment boxes so long that the delete 'x' is not available for me to delete the comment. anyway, try putting a single quote mark around the dollar-sign and numbers. It might work. –  sleepless in beantown Sep 28 '10 at 15:29
Don Frisby, the comment editing on this site interprets the dollar-sign symbol as the beginning of a math symbol. \pi surrounded by dollar signs comes out as the symbol $\pi$, so I think putting quotes around it as "\$45" should work. –  sleepless in beantown Sep 28 '10 at 15:29

If you need something to use like Napier's bones, I think the simplest solution is to build them yourself with large popsicle sticks that you can find in most craft shops. Glue an appropriate printout. A student of mine did that, and it worked fine.

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It looks like they're selling some here.

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Check the answer by Don Frisby before buing these! –  Michał Kukieła Mar 10 '11 at 21:48

On Amazon.com by doing a seach, e.g. this one

Also, I'm not sure this question belongs to Math Overflow (and an answer was obtained by a simple Google search) so I downvoted it.

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For the record, that's a poster print... not actual Napier's bones –  waiwai933 Oct 21 '09 at 1:51
Sorry to mislead you... In fact I did a search without even knowing what the Napier's Bones/Rods are :) –  Ilya Nikokoshev Oct 23 '09 at 20:35