15inch SAW touch screen 4,096 x 4,096 Z axis 256 scratch-free,hand or glove hand operation both USB & RS232 port l SAW touch screen panel technical specificationTechnologySurface Acoustic Wave(SAW) Sizes8.4” to 26” Controller Interface USB and RS232Resolution4096*4096MaterialPure glassPositional AccuracyStandard deviation of error is less than 0.080 in.(2mm)Light TransmissionMore than 90% per ...