| 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 |
| Thumbnail (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. |