DELTA M

gamma thermometers, and thermocouples not for medical use, RTD assemblies, namely an RTD (resistive temperature device) sold singly or in combination with other electronic devices all for use in monitoring temperature or other thermal characteristics of a fluid such as mass flow, and level and flow switches, namely, devices that are inserted into a liquid or a gas to monitor the level or flow of such fluid and to switch an electrical circuit when the level or flow meets predetermined criteria