Full Details

Name and Model Number Agnew Cloth Rule
Country of Origin England
Date of Manufacture ~1913
Front Scales A 60-10 B 10-700 C 1-70 D 10-700 Gauge Points Kilos/1000yds, Grammes per Lineal Metre, Oz per Yard
Back Scales None
Scale Length 60cm
Type of Rule Slide Rule
Construction Box/mahogany back, closed frame
Area of Use Other
Comment Used in the cloth manufacturing industry.
Rarity RR-RRR
Donor Collection of Peter Fox
Match Number 52

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.