Full Details


Name and Model Number Heath Hezzanith Carmody
Navigational
Country of Origin England
Date of Manufacture  
Front Scales ins/ LL2, A [B, CI, C] D, LL3
Back Scales [S, ST, T]
Scale Length 25.0 cm + 2.5 cm extension
Type of Rule Slide Rule
Construction Plastic
Area of Use Generic
Comment Back of rule contains a table of Haversines.
Rarity RR
Donor Collection of Rod Lovett
Match Number 16
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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.