It was based on the famed fire correction method of Finnish Artillery General Vilho Petter Nenonen, which enabled easy fire correction and quick changes of targets.
這是基於芬蘭砲兵總司令維爾霍·彼得·內諾寧著名的火力較正方法，這使射擊容易糾正和快速改變瞄準目標。