What am I looking at?
cheers calculators,
I was given a slide rule that I cannot identify. I have it from an engineer who worked at the german railroad company way back when.
there is no serial number or any other marking on the slide rule, the leather enclosure or the red cardboard box.
any idea what this thing is?
best regards
UPDATE:
I am looking at a:
Charvoz-Roos Log Log SR-??? (Model Number Unknown) - c1945
Made in USA - Celluloid laminate over wood, plastic braces. Cursor style same as Acumath 150, but with a thicker stock.
Note: Because there is no model number it was probably intended for rebranding for another company.
Front Scale: LL0, LL00, A [ B, K, L, C ] LL3, LL2, LL1
Back Scale: T, DF [ CF, CIF, CI, C ] D, S Cos, ST
thanks to u/Name-Not-Applicable
shoutout to sliderulemuseum.com