Full Details

Name and Model Number Unique Rolling Mill
Slide Rule - Types 1 & 2
Country of Origin England
Date of Manufacture c. 1950
Front Scales Specialized scales and curves
Back Scales none
Scale Length 10"
Type of Rule Slide Rule
Construction Celluloid on wood, with 2 slides and cursor
Area of Use Technical
Comment For rolling mill separating force and torque.
Copyright The Loewy Eng. Co. Ltd. London. Developed by A. Mogiljanskij.
Listed as a prototype in Peter Hopp’s Slide Rules book.
A slightly different version exists (Type 2). See details.
Rarity RRR
Donor Collection of Ron Knapp
Match Number 264
(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.