Air Flow Indicating Gauge, Selfilluminated Back Light With Led(Flush Mounted ).Rdso.Drg.No.Sk. Dp - 3523Alt."4". Rdso.Report No.Mp-1412/88-April-1988 &Rdso. Insp. Plan No.Mp.T P-14(Rev.00)July-2000 [ Warranty Period: 30 Months After The Date Of Delivery ] [Quantity Tolerance (+/-): 5 %Age , Item Category : Normal , Total Po Value Variation Permitted : Max 8 Lacs ] ]