Quick Coupling Arrangement (Plug And Socket Assy.) For Detachable Pressure Gauge. Drawing No. : Rdso,S Drg. No. Wd-91101-S-05, Alt. 5, Item 1 To 14 In Assembled Condition. Material And Specification : As Per Drawing And Conforming To Rdso S Spec. No. 02 - Abr - 2002, Amend. 4 Of Sept. 2016 , Appendix- N .