5.5 Dietzgen, USA
Chicago-based Dietzgen was founded by in 1885 when Eugene Dietzgen and Otto Luhring formed Luhring & Dietzgen to sell and promote engineering supplies. Dietzgen acquired materials from outside sources, primarily from Germany, but typically manufactured their products in Chicago. Still in business today, Dietzgen ceased making slide rules in about 1972, but was creating fine instruments in competition with K&E, Pickett, and Post/Hemmi.
Dietzgen 1761-AL.
Dietzgen 1767.
Dietzgen 1734.
Total number of Dietzgen slide rules in the collection: 20.
| 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 | ||
| 1759-B | 1919-1927 | L | wd | 10 | yes | Phillips brand; R scale (reciprocal B); E (K) scale on bottom edge; nice box | ||
| 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 |