1. This rule is a fairly standard log-log rule with one exception. It has one of the log-log scales on the edge of the stock. The cursor has a small "tongue" to allow for this.
2. This rule was purchased in Ukraine, whose language is similar to Russian and which also uses the Cyrillic alphabet.
3. The back of the rule bears the word GOST (in Cyrillic the G appears as an inverted L). This stand for State Standard, roughly equivalent of BS for Britain, DIN for Germany and ANSI for the US.