Dietzgen 1741 Slide Rule Log Log Leather Case Decimal Trig Type Mathematical VTH

A vintage Dietzgen slide rule model 1741 and original brown leather case. This scientific instrument features multiple scales for complex calculations. The included case offers secure storage and transport. Ideal for collectors, educators, or as a unique desk accessory. Vintage item, please see all pictures has some yellowing/discoloration. Leather case has somewhere on the inside shown in the pictures. Keywords: slide rule, vintage calculator, mathematical instrument, engineering tool, scientific equipment, historical artifact, calculating device, retro tech, drafting tool, geometry, trigonometry, logarithm, physics, chemistry