6.1 Most Recent Additions

Of the 335 slide rules presently in the collection, the most recent 25 additions are shown below in reverse chronological order of their acquisition.

Maker Model Year
Faber-Castell 3/11 Statique 1960
Belcher Bros.  Engineer’s Rule 1831-1843
K&E 4035 1905
K&E 4081-3 1953
Bruning 2401 1947
Pickett 4 1947-49
Pickett 3 1947-49
Bruning 2401 1950
K&E 4080-3 1939
Relay-Ricoh 99-7030 1965
Halden Calculex 1918
Pickett 4 1950
Aristo 971 1950
Boots Ringplan Precision Log Log 1970
K&E 4013 Thacher 1907
Pickett 1025 1952-1956
Pickett X-3 1975
Blundell Rules Limited Pilot Balloon Slide Rule Mark IV-A 1957-1964
Pickett 800-ES 1958
Unique Universal I 1959
Hemmi 30 1968
Graphic Calculator Percentage Calculator 1962
Hemmi Pocket Versalog II 1971
Pickett 901 1950
Hemmi Byoutou 1944