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Portable diagnostic instrument

HPM420 series portable hand-held readout features two-line display for simultaneous readings from two variable inputs. It measures flow, pressure, pressure differential, temperature, speed, current, and voltage. High-speed data logging has variable scanning rate of 1 msec for measuring and recording pressure spikes. It has memory for up to 250,000 readings, and results can be viewed on-site or transmitted by RS232 port to Windows software.

Webster Instruments, (800) 932-8378,