Dwyer Visi-Float Series VFA Flowmeter, 2" Scale, Range 20-200 cc/Minimum Water, with Stainless Steel Valve, 1/8" Female NPT Process Connection Cut and precision machined from solid, clear acrylic plastic bodies that permit complete visual inspection The machined acrylic bodies of the Visi-Float flowmeters are practically unbreakable The tapered bore is precision machined to a smooth surface that provides perfect visibility of the indicating float The VFA and VFB models are available with either brass or stainless steel inlet and outlet connections and are tapped for 1/8" NPT thread All VisiFloat flowmeters have metal mounting inserts on rear for panel mounting