"Distance is not a range" is about WWII Soviet armor simulator gun sights and covers 20 different tanks. Unlike Germany or the US, the Soviets during WWII had many different gun sights, all based on the Stadia metric system.
"Distance is not a Range" is the explanation of the stadia metric system, how to apply that system to Soviet sight successfully to increase the accuracy of each shots, to reach an average of one shot one hit instead of 3 shots one hit, in MP confrontations.
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"Distance is not a range" where parts of the book are reproduced.
The cover is available at: