The PD691 is a high performance, industrial-grade 4½ digit Strain Gauge Meter. It accepts all the standard strain gauge and load cell signals: 0-30 mV, 0-200 mV, ± 15 mV and ± 100 mV and displays these signals in engineering units on a 4½ digit display. The display also includes an extra zero which may be used to handle numbers up to ±199,99(0).