Dietzgen Polymath Decimal Log-Log N1733

The Polymath Multiplex Decimal Trig Type Log Log N1733 Rule was produced in the United States since 1957 until 1972. Fabricated with wood (mahogany?), sides laminated with white plastic but not the edges (what gave it a different and in my opinion elegant touch) , scales machine engraved, and all metal cursor. Very similar to the K&E-4081, the 22-scales N1733 and its strong construction were designed for high end science and engineering applications, for a lower price than similar rules from other brands, $ 24.00 in 1957 (about $224.00 now)

The scales on the N1733 are: LL01, K, A [ B, T<45 Cot, T>45 Cot, ST, S Cos ] D, DI, LL1 on the front face, and LL02, LL03, DF [ CF, CIF, L, CI, C ] D, LL3, LL2 on the back face. According with the serial number on specimen in this collection, it had to be fabricated between 1957-1959

Click on the next links to see professional panoramic pictures of the N1733 model.

https://www.sliderulemuseum.com/Dietzgen/Dietzgen_N1733_DecTrigLogLog_sn005585_GiftOfPhillipRodley.jpg