Case:              Black steel, Ø3"(80mm),Black steel
Ring:               Black steel ,front flange
Window:          Plastic
Pointer:           Black aluminium
Dial:                Aluminium
Bourdon tube:  Phosphor bronze
Movement:       Brass
Wetted parts:   Brass
Type:              Back entry
Union:             14/"BSP,1/4"NPT 
Accuracy:        ±1.6%
Scale:              Single or double scales
Range:            0-2.5/4.0/6.0/10/16/25/40/60/100160/250/400/600/1000 bar&psi