1964 Russian USSR Leningrad GOST/ГОСТ 5161 - 57 Engineering Slide Rule Tool СССР
RM 124.47RM 165.98
Engineering Slide Rules
German Meissner Fabrikat Modell 75/2b Engineering Slide Rule System Rietz c.1950
RM 214.79RM 286.38
Rare LOGAREX 21601 Old GERMAN Engineering Triangular Slide Scale Rule with Case
RM 280.12RM 373.50
1960 Russian USSR Leningrad GOST/ГОСТ 5161 - 57 Engineering Slide Rule Tool СССР
RM 202.34RM 269.78
1960's Gost 5161-57 Russian USSR Engineering Slide Rule СССР Счётная линейка
RM 202.34RM 269.78