| Name and Model Number | Nestler Rechen-Walze 3.75 m |
| Country of Origin | Germany |
| Date of Manufacture | c.1930 |
| Front Scales | C and D scales in 30 sections |
| Back Scales | none |
| Scale Length | 3.75 m |
| Type of Rule | Cylinder |
| Construction | Paper scales on metal cylinder (33.5 cm long x 9 cm dia.) on metal stand. |
| Area of Use | Generic |
| Comment | Unusual scale length. Most Swiss cylindrical slide rules do not have fractional scale lengths.
Marked: "Nestler's Rechen-Walze 3.75m, Albert Nestler A.-G. Lahr i/B. Often used by bankers. |
| Rarity | RRR |
| Donor | Collection of Ed Chamberlain |
| Match Number | 169 |
| 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. |