| 摘要 |
A system for measuring and indicating air tire pressure which is adapted for mounting on the valve stem of a tire. The system, which is entirely self-contained in a housing threaded for fastening to the valve stem, includes a pressure transducer, a signal processing unit connected to the pressure transducer, display means connected to the signal processing unit to display pressure, and a battery to provide electric energy. A plunger is axially mounted within the housing, which when depressed, closes an electric circuit between the battery and the electronic components, and also activates the valve to admit air into the housing from the tire.
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