Dietzgen 1725. Eugene Dietzgen Co.
Dietzgen Maniphase Multiplex 1732. Eugene Dietzgen Co.
Dietzgen Polymath Multiplex N1733. Eugene Dietzgen Co.
Dietzgen Microglide 1734. Eugene Dietzgen Co.
Dietzgen 1737. Made in Japan by Relay/Ricoh.
Dietzgen Multiphase Style-M, Improved Decimal Trig Type Log Log Rule, Catalogue Number 1738.
Dietzgen Phillips 1740P.
Dietzgen Maniphase Multiplex 1746. Eugene Dietzgen Co.
Dietzgen National 1767.
Dietzgen National 1767P Slide Rule. This Slide Rule arrived in its own box, packaged with the book Slide Rule Simplified by C.O.Harris. This is a copy of the Lawrence Engineering 250BT.
Dietzgen Reliance 1768P Slide Rule.
Dietzgen Federal 1769P Slide Rule.
