Full Details

Name and Model Number Aristo 10096
System Prof. J. Peters
Country of Origin Germany
Date of Manufacture 1953
Front Scales constants, constants, A [B, C] D, L
Back Scales None
Scale Length 25 cm
Type of Rule Slide Rule
Construction Plastic
Area of Use Other
Comment A medical rule.
Rarity RRR
Donor Collection of Rod Lovett
Match Number 7

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.