Full Details

Name and Model Number Aristo 930 Textil
Country of Origin Germany
Date of Manufacture 1962
Front Scales Ne1, L, K, A [B, BI, a1e, C] D, T/1", Ne2, Ne3
Back Scales NeW, NeK, NeL, DF [CF, N2, CI, C] D, N1, NeB, Td
Scale Length 25.0 cm + 1.8 cm extension
Type of Rule Slide Rule
Construction Plastic
Area of Use Other
Comment Used in the textile industry.
Rarity RRR
Donor Collection of Rod Lovett
Match Number 14

RR = Rare -- 1 of 25 collectors has one; it may take a year to find an example in the marketplace.   
RRR = Very rare -- only very few known to collectors; may take several years before one comes up for sale.   
RRRR = Extremely rare -- a museum piece; unlikely that an example will ever come up for sale.