Manual of PetroleumMeasurement StandardsChapter 2-Tank CalibrationSection 2D-Calibration of Upright CylindricalTanks Using the Internal Electro-optical Distance Ranging MethodFIRST EDITION,AUGUST 2003ANSI/API MPMS 2.2D-2003Approved American National StandarAmericanPetroleumANSIInstituteHelping YouGet The JobDone Right.MNo roproduction or notworking permitled without liconso from IHSNot for Rosale