Detailed Product Description Level gauge borosilicate reflex glass (Sight Glass = reflex glass = Level Gauge glass = Reflex gauge glass)Its made from Borosilicate, it ... for water position.It is also named: Reflex Gauge Glass, Sight glass, Reflex GlassesReflex sight glass, Spares For level GaugeThe ... gauge glass: (Type of level gauge glass: plain/transparent,reflex)40 x 34(30) x 17mm, 320x 34(30) ...