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US007339487B2
(12) United States Patent ao) Patent No.: Us 7,339,487 B2
Wang (45) Date of Patent: Mar. 4,2008
An improved structure of meter, comprising a casing, a circuit board provided in the casing and having a connecting unit for connecting to an external machine, a central processor provided on the circuit board for transmitting the signals among individual unit and machine, a display unit for displaying the condition of the external machine, a correcting memory unit for detecting and memorizing the signals from various machines, a driving control unit for saving the variations in signals from various machines, a monitoring unit for presetting an alarm value and producing an alarm signal, a wireless transmitting unit for receiving the signals transmitted from the wireless controller, and an illuminating unit connected to the central processor for corresponding to both ends of the meter ring and the display unit. With the above arrangement, the meter of the present invention can be adapted to various kinds of machines and instruments.
3 Claims, 5 Drawing Sheets
