API MPMS 2.2F pdf download.Petroleum and liquid petroleum products — Calibration of horizontal cylindrical tanks 5 Equipment 5.1 Electro-optical distance-ranging instrument 5.1.1 The angle-measuring part of the instrument shall have an angular graduation and resolution equal to or better than 0,002 gon. This part of the instrument shall have a repeatability equal to or better than ± 0,005 gon. 5.1.2...