Manometers; Electrical sensor apparatus for sensing the presence or absence of individuals or objects by contact or pressure; Electronic sensors for detecting microbes; Force measurement products, namely, digital force gauges, digital torque gauges and manual and motorized test stands used therewith sold as a unit with the gauges; Industrial calibration sensors; Microsensors for measurement of pressure, acceleration, force and flow, namely, silicon piezoresistive pressure sensors; Plastic tes...