Greyline Instruments Inc. - Greyline Instruments pulsar, pulsar measurement, pulsar process measurement, greyline, greyline instruments, flow measurement, level measurement, sludge level, water, wastewater, chemical, industrial, irrigation, oil, gas Pulsar Measurement is a leading manufacturer of flow and level measurement products for water, wastewater, and industrial markets. With a wide range of technology in our portfolio, there is almost certainly a solution for your application.