Full Details

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
(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.