User don frisby - MathOverflow most recent 30 from http://mathoverflow.net 2013-05-25T00:58:20Z http://mathoverflow.net/feeds/user/9582 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/213/where-can-i-buy-napiers-bones-rods/40327#40327 Answer by Don Frisby for Where can I buy Napier's Bones/Rods? Don Frisby 2010-09-28T15:09:54Z 2010-09-28T15:15:14Z <p>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, <a href="http://www.uniquecanes.com" rel="nofollow">http://www.uniquecanes.com</a>. 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. </p>