Full Details

Name and Model Number Graphoplex
698 Electonicien
Country of Origin France
Date of Manufacture c. 1970
Front Scales f Xc fXl A [ B L (inductance) Cap. CI C ] D f' f L/decibels
Back Scales ST T S DF [ CF CIF K CI C ] LL3 LL2 LL1
Scale Length 25 cm with extensions
Type of Rule Slide Rule
Construction Plastic
Area of Use Electrical
Rarity RR
Donor Photo courtesy of Jodie Hobson
Match Number 387
(Click Picture for Details)

In conjunction with our 'donors' we assign a rarity rating to each item, based on the system devised by Herman van Herwijnen
(1929 - 2004), renowned Dutch collector, author, and creator of Herman's Archive, a collection of 5,000 slide rule images on CD.
• RR = Rare - 1 of 25 collectors has one; it may take a year to find an example in the marketplace.
• RRR = Very Rare - only a few known to collectors; may be several years before it comes up for sale.
• RRRR = Extremely Rare - a museum piece; unlikely that an example will come up for sale.