That’s a 20 cm (8-inch) ruler. The knife itself is 30 cm (12 inches). I put it there just for scale.

The plot of Metro Exodus is based on the book “Metro 2033: Beyond the Horizon” (this is a book from the expanded universe). There, the main character, a stalker nicknamed “Taran,” along with his crew, set off from Saint Petersburg to Vladivostok on an MZKT-79221 missile carrier (which had its missile replaced with a fuel tank). The characters also crossed the Volga, visited Yamantau, traveled along the shores of the Caspian Sea and Lake Baikal, and finished their journey in Vladivostok