OMEGA FL-3540G Variable Area Rotameter Flow Meter 1/4 in 0-150 SCFH

Airtrol FM2034 Variable Area Rotameter Flow Meter, 1/4 in, 0-15 SCFH

Matheson PM-FLO Variable Area Rotameter Flow Meter, 1/4 in, 0-30 LPM

RMI Precision Acrylic Variable Area Rotameter Flow Meter, 1/4 in, 0-5 LPM A0061

Parker FMK-840 Variable Area Rotameter Flow Meter, 1/4 in, 0-15 L/min

Precision PMP-1 Variable Area Rotameter Flow Meter, 1/4 in, 0-15 LPM

Harris Model 821 Variable Area Rotameter Flow Meter, 1/4 in, 1-10 L/min

OMEGA FL7412 style variable area rotameter accurately measure air flow