Description
"Inline flow sights can be used in either vertical or horizontal fluid lines to observe fluid fl ow, clarity or condition ofmedium. A ball float can be supplied to aid observation of fl ow of dark fluids or fluids in dimly lit conditions. "http://www.ldi-industries.com/LDI-Files/Spec-Sheets/Lubrication-Equipment/Flow-Sights/F150-F160_Series.pdf