The ESH series mechanical force gauge is designed for high capacity measurements from 200 lbs up to 500 lbs (300 kg). The rugged metal housing and heavy duty springs will withstand the harsh rugged environment of a manufacturing plant, yet the highly accurate, matched springs will ensure reliable results and retain their accuracy over long periods. The tare ring allows you to zero the gauge and compensate for measuring attachments and changes in measuring position. The real time/peak hold selector switch enables you to observe transients or capture peaks. ESH force gauges are available in pounds, kilograms and Newtons. No batteries are needed and the unit is intrinsically safe in hazardous environments.