operating system | Imperial Japanese Navy | Super Nintendo Entertainment System | Nintendo Entertainment System | Imperial Japanese Army | Imperial College London | Android (operating system) | First Australian Imperial Force | Global Positioning System | Solar System | X Window System | Imperial War Museum | Imperial Chemical Industries | Imperial | Imperial Russian Navy | Korean Broadcasting System | System of a Down | Imperial Tobacco | Domain Name System | Seoul Broadcasting System | North Carolina Community College System | Mutual Broadcasting System | Imperial Airways | Imperial Academy of Arts | Bulletin board system | system | Imperial Russian Army | Canadian Imperial Bank of Commerce | Turner Broadcasting System | Program and System Information Protocol |
It is especially popular with shooters familiar with the Imperial measurement system because 1 MOA subtends approximately one inch at 100 yards, a traditional distance on target ranges.
Square mile, a unit of surface area in the Imperial measurement system and more usually abbreviated to sq mile or sq mi