Float-type flow meter with glass measuring cone– Tubux M30
Amazon.com: Taidda Flow Meter, Glass Liquid Flowmeter 0.2-2GPM/1-7LPM Panel Type Glass Liquid Flowmetre Water Flow Measuring Meter : Industrial & Scientific
LZB-15(D) Rotameter Water Flow Meter Material Glass Stainless Steel Plastic Transparent Pipeline Flowmeter Liquid Flow Rate Gauge(5-50mL/H) - Amazon.com
Malema, a PSG brand. 6001 & 6002 series glass tube variable area flow meters
Telelin Glass Flow Meter Rotameter, For Water
Source Professional supplier LZB-DK800 air digital flowmeter gas glass tube rotameter flow indicator meter for water on m.alibaba.com
Variable Area Flowmeter | Glass Tube - Variable Area Flow Meter | Supplier | Manufacturer (Flow Measurement | Flowmeter | Supplier) | ABB
Amazon.com: LZB-3 Glass Tube Liquid Flowmeter, Panel Type Water Flow Meter Adjustable Black Knob Water Flow Meter Panel Mount Type Flowmeter(10-100mL/min) : Industrial & Scientific