Imada Ltd. DPS-0.5 Digital Force Gauge (8.8oz x 0.001oz, 5.8VDC, 100mA, PS232C) | eBay
ZTA series (Separated Sensor Model) | IMADA specializes in force measurement,ZTA-DPU Digital Force Gauge with Remote Sensor - Imada Inc.,Imada Ltd. DPS-0.5 Digital Force Gauge (8.8oz x 0.001oz, 5.8VDC, 100mA, PS232C) | eBay,DS2-0.4 Digital Force Gauge - Imada Inc.