RUIAN Flowmeter measuring the oil or water, easy to read for its clear scale. Straight tube style connect the liquid tube by two male thread. Stainless steel material inner and glasses panel design.easy portability and storage, mainly used for detecting the flow, control flow and can be used in industry Color : Clear, Gray Size(Without Thread) : 18 x 6.5 x 3.2cm / 7.1" x 2.6" x 1.3" (L*W*H) Range : GPM: 0.05-0.5; LPM: 0.2-2 Male Thread Diameter : 1/2" PT Package Content : 1 x Panel Type Flow Meter