NEW SIGHT FLOW INDICATOR 1/4" SINGLE WINDOW PROPELLER,... WG-420

1/2" Single Window Sight Flow Indicator with Propeller

1-1/4" NPT Sight Glass Brass Full Flow 175 Psi Female x Male NPT

Sight Flow Indicator Double Window Propeller 1/2" 125PSI

W.E. ANDERSON SFI-100-3/4" SIGHT FLOW INDICATOR, BRONZE, 125 MAX PSI, 200°, NIB

Dwyer Instruments Midwest Sight Flow Indicator Bronze 1/2 NPT SFI-100-1/2

NIB, Nugent, 57-096-211, Sight Flow Indicator

lot of 15 - Emerson Penberthy Sight flow indicator glass replacement 5"