RUSSIAN SLIDE RULES by Sergei Frolov

MEDIUM SLIDE RULES #4

25 cm (10"). Gost 5161-57. Ramenskoye. Year: 1970
Details: Front side | Back side

25 cm (10"). Gost 5161-72. Year: 1980
Details: Front side | Back side

NEXT: LARGE SLIDE RULES #1

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© Sergei Frolov, 1998-2001

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