Full Details

Name and Model Number ALKU Slide Rule
Country of Origin East Germany
Date of Manufacture c. 1947
Front Scales A B CI C D
Back Scales none
Scale Length 15 cm
Type of Rule Slide Rule
Construction Made entirely of glass plates coated with paper and thin cardboard, with a celluloid sheet cursor.
Area of Use Generic
Comment A very unusual slide rule in that the body is made of paper-coated glass plates.
Made by ALKU Rechenschieberfabrik, Neueibau, Germany.
For more photos and info see http://www.nzeldes.com/HOC/ALKU.htm
I know of two other collectors who own one of these, Klaus Przadka and Klaus Greis, both in Germany.
Rarity RRR
Donor Collection of Nathan Zeldes, Israel
Match Number 246
(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.