The hand-held Model JD wet/wet differential pressure gauge deliverslong-lasting, enhanced accuracy performance. Accuracyof 0.2 % coupled with an enhanced resolution, 4½-digit displaymakes this unit an excellent transfer standard for calibratingpressure measuring equipment.The JD is rugged and features high/low pressure capture with anupdate rate of three times per second. These units are manufacturedfrom stainless steel and use sensor technology which hasno moving parts, requires little recalibration, and has excellentoverpressure tolerance.Each unit has a membrane face with raised buttons and tactilefeedback for setup and operation. The high, low, and clear buttonsare easily accessible on this front membrane. Zero adjustmentand zero offset/tare functions are standard on each unit.Calibration and setup parameters are stored on a memory chipto protect from loss even when power is interrupted. Unauthorizedset ups and calibrations are also blocked with internalsecurity. Various combinations of the front panel buttons can bede-activated.