Full Details

Name and Model Number Morris University
StudentMade Slide Rule
Country of Origin USA
Date of Manufacture 1937
Front Scales Special
Back Scales None
Scale Length 30 cm
Type of Rule Slide Rule
Construction 35.5-cm x 6.4-cm maple wood. Scales hand inked.
Area of Use Technical
Comment Fuel consumption of an internal combustion engine.Made by a Univ. Michigan Mechanical Engineering student as a requirement for a Graphics course. Marked Graphics M.E. 326c, Slide Rule #4, submitted by Mark M. Morris, July 10, 1937. Formula, variables & constants on reverse. This is a one of a kind slide rule.
Rarity RRRR
Donor Collection of Ed Chamberlain
Match Number 183
(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.