Abstract: A tire pressure measurement apparatus is provided with a housing including a dome-shaped cavity on a rear end, bottom projections, and a channel communicating with the cavity; a valve including a curved head complimentarily disposed in the cavity, an internally threaded cylindrical member projecting out of the head through the cavity into the channel wherein the cylindrical member is limited by either side of the channel; and an externally threaded fastener driven through the channel into the cylindrical member to threadedly secure the housing and the head of the valve together. The housing is configured to rotate about the valve along a lengthwise axis of the valve. The housing is configured to pivot about the valve along a line passing through the channel. The pivot of the housing about the valve is stopped when the housing contacts either side of the channel.

Abstract: A tire pressure measurement apparatus is provided with a housing including a dome-shaped cavity on a rear end, bottom projections, and a channel communicating with the cavity; a valve including a curved head complimentarily disposed in the cavity, an internally threaded cylindrical member projecting out of the head through the cavity into the channel wherein the cylindrical member is limited by either side of the channel; and an externally threaded fastener driven through the channel into the cylindrical member to threadedly secure the housing and the head of the valve together. The housing is configured to rotate about the valve along a lengthwise axis of the valve. The housing is configured to pivot about the valve along a line passing through the channel. The pivot of the housing about the valve is stopped when the housing contacts either side of the channel.

Abstract: A digital audio assembly includes a digital signal processor (DSP) mounted and a digital analog converter (DAC) mounted therein. A universal serial bus (USB) socket is mounted in a front panel of a base member and electrically connected to the DSP. The USB socket can be connected to extra media. A secure digital memory card (SD card) socket is mounted in the front panel and electrically connected to the DSP. The SD card socket can receive a SD card and read the digital signals in the SD card. A sound-source input port is mounted in the front panel and electrically connected to the DAC, and a sound-effect input/output port is mounted in a rear panel of the base member and electrically connected to the DAC.