5.5 Dietzgen, USA
Chicago-based Dietzgen, founded in 1885, made slide rules from component parts bought from other organizations (original equipment manufacturers, OEMs), often from Faber-Castell, and sold their final products in the American market. Still in business today, Dietzgen ceased making slide rules in about 1972, but was creating fine instruments in competition with K&E and Post/Hemmi at the time.
Dietzgen 1761-AL.
Dietzgen 1767.
Dietzgen 1734.
Total number of Dietzgen slide rules in the collection: 19.
| Model | Year | Serial | Type | Mat | L0 | Case | Note | |
|---|---|---|---|---|---|---|---|---|
| 1765 | 1902-1912 | L | wd | 10 | yes | Mack Improved, Pat.June 28.1893; nice box, excellent condition; owner J. Ballard Smith | ||
| MultiplexProto | 1905-1907 | L | wd | 10 | yes | Very early Multiplex prototype rule, Br-B’’ scale in red; US patent Aug 9, 1904 (Br-B’’ scale); made by Nestler (German patent D.R. 173660, 1905); prod. mark 2904 on back; no cursor; came with mis-matched box labeled Mannheim on front flap, 1760 P on end; flap has decorative button; owner W. Templin, 3909 Melrose | ||
| 1762-B |
|
1907 | L | wd | 10 | no | Multiplex rule, Br-B’’ scale; E (K) scale on lower edge; chiseled metal cursor; no serial no.; Mack adjustment; 1898,1904 patents; Equiv. labeling on back mostly missing | |
| 1762-B |
|
1907 | 682A | L | wd | 10 | yes | Multiplex rule, Br-B’’ scale; E (K) scale on lower edge; chiseled metal cursor; Mack adjustment; 1904 patent; owner Oscar Sorensen, Sacred Heart, Minn., Canby Minn., Box 82 |
| 1761-AL | 1910-1912 | 8709A | L | wd | 8 | yes | Multiplex rule, Br-B’’ scale; owner Charles A. Kroft, 5-30-27, Chassis Engineering, Studebaker Corp., So. Bend, Indiana | |
| 1760-B | 1910-1921 | L | wd | 10 | yes | Multiplex rule, Br-B’’ scale; 1760-B on right end | ||
| 1759-B | 1919-1927 | L | wd | 10 | yes | Phillips brand; R scale (reciprocal B); E (K) scale on bottom edge, etched metal cursor; box missing lid | ||
| 1759-B | 1919-1927 | L | wd | 10 | no | Phillips brand; R scale (reciprocal B); E (K) scale on bottom edge; no cursor | ||
| 1745 |
|
1940 | L | wd | 10 | yes | Mannheim; cursor in fragile condition; case is for 1745 LM (magnifier) | |
| 1735 | 1941-1952 | 106514 | L | wd | 10 | yes | Vector rule, early model, frameless cursor; owner W. J. Dunbar, , 1500 Hays, Boise, ID | |
| 1767-P | 1942 | L | wd | 10 | yes | National; Made in U.S.A.; badly yellowed narrow cursor; early conversion chart; includes 1942 pamphlet How to Use a Slide Rule | ||
| 1732 |
|
1952 | 542899 | L | wd | 10 | yes | Maniphase Multiplex Decimal Trig Type Log Log; worn case; rule in good shape; 87 stamped on end of stock; owned by Reitz |
| 1732 |
|
1952 | 548230 | L | wd | 10 | yes + box | Maniphase Multiplex Decimal Trig Type Log Log; rule in very good condition |
| 1739-L | 1954 | L | pl | 10 | no | Decimal Trig Log Log; no case, but good condition; made in Germany; clear-scale | ||
| 1734 |
|
1963 | 36353 | L | wd | 10 | yes | Microglide Decimal Trig Log Log; decimal trig type log log; nice condition; conversion table |
| 1767 |
|
1965 | L | pl | 10 | yes | National; Made in U.S.A.; torn case; conversion table | |
| N1725 | 1967 | 77961 | L | wd | 10 | yes | Microglide Vector Type Log Log; leather case; owner George Locke | |
| 1771 | 1970-1972 | L | pl | 5 | yes | Redirule | ||
| 1776 | 1972 | L | pl | 5 | yes + box | Redirule Pocket Duplex; box, instructions, leather case |