Steven Levy Enterprises buys and sells new, unused, and used industrial surplus gauges, thermometers and thermowells. Browse our inventory of used industrial gauges, thermometers and thermowells available for purchase. A gauge is an instrument for measuring the magnitude, amount, or contents of something, typically with a visual display of such information. Industrial thermometers are used for temperature measurement in many industrial applications. They are generally more durable than laboratory thermometers. Thermowells are cylindrical fittings used to protect temperature sensors installed in industrial processes. Tell us what surplus gauges, thermometers and thermowells you have for sale or call us at 713-910-4337.