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243_MasterPieces_04b.qxd  4/18/03  7:08 PM  Page 209





                                                                               PneumADDic II • Masterpiece 4   209
                      Digital Pressure Sensor Step 6

























                                 When the pressure is high enough to
                                 overcome the compression force of
                                 the rubber bands, the piston expands
                                 and depresses the touch sensor.






                                 Digital Pressure Sensor Step 7
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