Full Details

Name and Model Number Whythe Complex Number
Country of Origin England
Date of Manufacture  
Front Scales Real part, Imaginary part, Modulus, Argument (Phase)
Back Scales None
Scale Length  
Type of Rule Cylinder
Construction Bakelite
Area of Use Electrical
Comment Manufactured by Stanley.
Rarity RRR
Donor Collection of Rod Lovett
Match Number 28

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.