We present a metal mesh touch sensor fabricated by roll to roll printing on a thin flexible plastic substrate. High transparency and conductivity of the single layer device facilitate large sensor sizes and high accuracy. Due to mutual capacitance sensing the screen supports multi touch operation. Precision measurements performed on a xyz linear stage equipped with a metal test finger provide data for linearity and point accuracy of the touch sensor. The point accuracy is further analyzed statistically and shows a typical deviation of 0.46mm for a 3 inch x 2 inch one layer touchscreen.