Vintage Aristo Slide Rule 0969 with extras.

Collectable Aristo StudioLog Slide Rule No 0969 in original plastic case and manual, and clip-on supports. VGC
Aristo was a slide rule manufacturer since 1872.
Dennert & Pape was founded by Johann Dennert & Martin Pape, in Hamburg, Germany, and continued under that name until 1936.
D&P officially became Aristo as a company in 1948 when they introduced all-plastic Duplex slide rules and discontinued mahogany wood models. Aristo stayed in the slide rule business until the end of 1978, a run of 106 years. Aristo was one of the most important slide rule manufacturers world wide.
Aristo 0969 Studiolog
Made in Germany - 29 scales
Front Scale(extended)
LL00, LL01, LL02, LL03, A [ B, BI, K, L, CI, C ] D, LL3, LL2, LL1, LL0
Back Scale
ST, T1, T2, DF [ CF, CIF, S, CI, C ] D, DI, P, S Cos
Multiple hairlines: PS, KW
It is 14.6” (37.2 cm) long, and 2.6” (6.6 cm) wide.
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