Babbitt International
Babbitt International of Houston, Texas manufactures products for Level controls, including level switches, level gauges, level transmitters, RF switches and liquid level indicators for liquids, bulk solids, dust emissions, dry material flow and filter leaks. Applications include bins, pressure vessels, sumps, tanks, hoppers, rail cars, bag houses and dust collectors
http://www.babbittlevel.com/

Reed Electronics AG
REED Electronics AG - Grenzschalter, Schwimmerschalter, Füllstandsüberwachung, Niveauschalter, Magnetic switches, Messsysteme
http://www.reedag.ch/

Flowline, Liquid Level Intelligence
Manufacturer of plastic level transmitters, level switches and flow switches designed specifically for harsh acid, caustic and chemical solutions. Describes products and 10 alternative technologies including ultrasonic, capacitance, optic, radar, and thermal.
http://www.flowline.com/

Madison Company
Madison Company designs and manufactures level, temperature, proximity and flow switches and sensors for OEM installations worldwide. Applications include off-highway vehicles, food equipment, appliances and medical equipment.
http://www.madisonco.com/

Baccara
Baccara Automation Control, Melbourne, Australia - Solenoid Valves, Irrigation Valves & Controls, Pressure Switches, Level Controls, Flow Measurement & Control, Irrigation Valves & Controls, Pressure Gauges, Pressure Trandsducers.
http://www.baccara.com.au

Kari Float Switches
Kari switches: one float switch - many functions
http://www.kari-finn.fi/eng/e_index.html

Lamb Industries Inc.
A leading switch manufacturer since 1979. We specialize in DIP Rotary Switches, DIP Switches, Electromagnetic Switches, Float Switches, Pressure Switches, Pushbutton Switches, Rocker Switches, Rotary Switches, Safety Switches, Signal Lights, Slide Switches, Tactile Switches, Toggle Switches, and Trigger Switches.
http://www.lambind.com

Dwyer Instruments, Inc.
Full line catalog of Industrial controls including pressure gages, manometers, pressure-switches, transmitters, flowmeters, flow-switches, pitot tubes, anemometers, air velocity instruments, Level-Switches, temperature-controllers, thermocouples, RTD's, and valves
http://www.dwyer-inst.com/

Innovative Components
Innovative Components: we develop quality level sensors designed to add value to your product, and to meet the diverse needs of your business specializing in Level Control, Level Sensor, Liquid Level, Level Indicator, Float Switch.
http://www.liquidlevel.com

Nivelco Process Control Co., Inc.
Manufacturer of a wide range of level control equipment including vibration, conductivity, and float based level switches, capacitance and hydrostatic level transmitters.
http://www.nivelco.hu/