This app is very helpful for Calculation of Blank Diameter, Weight,Crown Radius, Knucle Radius,Height and other Related Terms of Various Types of Pressure Vessel heads such as Torispherical Head, ellipsoidal head and Hemispherical Head. This is Also Used to Calculate Template Layout Marking for 2:1 Ellipsoidal Dish ends. It is also applicable for Pressure Vessel End Caps or Pressure Vessels Dish Ends. This App Having Following Types of Calculators: 1. Flat Dish End Blank Diameter Calculator. 2