Full Details

Name and Model Number Acu-Rule C.V. Ore
S-M No. 1155
Country of Origin USA
Date of Manufacture c. 1955
Front Scales DS [ CI, C ] D DM
Back Scales none
Scale Length 25 cm
Type of Rule Slide Rule
Construction Plastic. Rule is 27" long.
Area of Use Other
Comment Rule is for teaching the operation of a slide rule.
Mr. C. V. Ore of Harvey, Illinois designed this slide rule for the beginner. The DS and DM scales are for teaching "the mechanics of
the slide rule and to aid in reading conventional C, D, and CI scales." ref: ISRM web site. Also a wood version sold by Lawrence Engineering.
Rarity RRR
Donor Collection of Ed Chamberlain
Match Number 202
(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.