6.1 Most Recent Additions
Of the 440 slide rules presently in the collection, the most recent 25 additions are shown below in reverse chronological order of their acquisition.
| Maker | Model | Year | |
|---|---|---|---|
| Richardson | 1860 LL | 1917 |
|
| K&E | 68-1400 | 1967 |
|
| K&E | Celanese Celcon | 1961-1964 |
|
| Nestler | 40 | 1938-42 |
|
| Hemmi | P262 | 1970 |
|
| T&T Electric | The Fast Calculator | 1938 |
|
| K&E | 4097 | 1933 |
|
| K&E | 4097B | 1939 |
|
| Pickett | B1 | 1971 |
|
| US Naval Gun Factory | Spring Slide Rule | 1939 |
|
| K&E | 8858 | 1941 |
|
| The Spirule Co. | Spirule | 1959 |
|
| FXR | Radio Transmission Line Calculator & Smith Chart | 1950 |
|
| Relay | 505 | 1960 |
|
| Richardson | 812 | 1922 |
|
| Hemmi | 2664 | 1946 |
|
| K&E | N4053-3 | 1923 |
|
| Richardson | Direct Reading Pocket | 1912 |
|
| Richardson | Direct Reading Pocket | 1912 |
|
| Richardson | Direct Reading Pocket | 1911 |
|
| Richardson | Direct Reading Slide Rule | 1910 |
|
| Richardson | Direct Reading Slide Rule | 1909 |
|
| Cox & Stevens | No. 1066 | 1943 |
|
| Hemmi | 150 | 1936-40 |
|
| Hemmi | 32 | 1931-33 |
|