12″ = 30 cm8″ = 20 cm10″ = 25 cm14″ = 35 cm15″ = 38 cm16″ = 40 cm17″ = 43 cm18″ = 45 cm20″ = 50 cm22″ = 55 cm25″ = 63,5 cm
1 = 0,043″ = 1,1 mm2 = 0,050″ = 1,3 mm3 = 0,058″ = 1,5 mm4 = 0,063″ = 1,6 mm
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A = 3/8″B = 3/8″ LPC = .325″D = 1/4″