Manufactures liquid level and flow sensors.Liquid Level Switches and Flow Switches from Thomas Products Ltd. Search Catalog: By Part Number By Keyword Use trailing wildcard (*) for broader results Call Toll Free : 800-666-9101 Company Profile | Contact / Request Quote | Email • Home • Level Switches • Flow Switches • Flow Indicators • Product Index • Capabilities Thomas Products designs and manufactures hundreds of standard flow and level switches, as well as water flow gages, liquid level gauges, flow gages, water level controls, liquid level controls an