Patent ID: 7010969

Claim:
An electronic measuring device comprising: a housing, said housing comprising a chamber, an elongated sliding slot, a through hole, and an air hole connectable to the air valve of a vehicle tire for receiving air pressure from the vehicle tire, said elongated sliding slot and said through hole and said air hole being in communication with said chamber; display means mounted in said housing; a tread scale for measuring the tread depth of a vehicle tire, said tread scale comprising a sliding block coupled to said housing and movable along said elongated sliding slot, and a measuring tip fixedly connected to said sliding block and movable in and out of said through hole of said housing; a variable resistor mounted in said chamber inside said housing and adapted to output a variation of resistance value indicative of movement of said measuring tip relative to said housing; a pressure sensor mounted in said chamber inside said housing and adapted to detect the pressure of air entering said air hole and to output a signal indicative of the pressure of air detected; and a circuit board mounted in said chamber inside said housing and electrically connected with said variable resistor, said pressure sensor and said display means and adapted to convert the variation of resistance value received from said variable resistor into a readable distance value and the signal outputted from said pressure sensor into a readable pressure reading for display on said display means.