Name Faber Castell 67/54 Darmstadt
Front Scales 14cm lg / K A = B CI C = D P \ sin tg
Back Scales = LL1 LL2 LL3 =
Type of Rule Slide Rule
Material Plastic
Dimension (mm) 155x39x3.5
Area of Use Generic
Origin of Rule Alessandro Manni's Collection
Match Number 7070
Comment Presumably dated XI-1940
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