Full Details

Name and Model Number Faber-Castell 343
System Baur
Country of Origin Germany
Date of Manufacture 1915 - 1931
Front Scales A, B, C, D
Back Scales none
Scale Length 25 cm
Type of Rule Slide Rule
Construction Celluloid on boxwood
Area of Use Generic
Comment For precision basic math. Has 3 special scales for roots and powers on upper bevelled edge, with chisel cursor.
Rarity RRR
Donor Collection of Peter Holland, Germany
Match Number 227
(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.