Full Details

Name and Model Number Keuffel &Esser
Reymond Leather Calculator
Country of Origin USA
Date of Manufacture 1920s. Patented 1924.
Front Scales 5 special scales
Back Scales none
Scale Length about 50 cm
Type of Rule Rule
Construction Mahogany with celluloid scale surfaces; has 3 slides with metal pointers, but no cursor. Size: 51 cm x 19 cm. In mahogany box with hinged lid.
Area of Use Other
Comment Calculates the number of shoes for selected sizes that can be cut from a leather hide of given area.
The Reymond Leather calculator was made by K&E and sold by K&E and others. This example has K&E's mark.
It was a special order slide rule and did not appear in K&E's catalogs.

Rarity RR
Donor Collection of Ed Chamberlain, USA
Match Number 143
(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.