PRESURE CONVERSIONS Multiply By To Obtain ============================================================== Inches of Water 0.036 Pounds per Square Inch Inches of Mercury 0.491 Pounds per Square Inch Feet of Water 0.433 Pounds per Square Inch Ounces per Square Inch 0.062 Pounds per Square Inch Atmospheres 14.7 Pounds per Square Inch Kilograms per Squar Cm. 14.22 Pounds per Square Inch Centimetres of Mercury 0.193 Pounds per Square Inch