A cylinder head gasket 1 is sandwiched between a cylinder head 2 and a cylinder block 3 with a cylinder bore 4 and includes a substrate 10 with a combustion chamber hole 14 drilled at a position of the cylinder bore 4, and seal plates 11 to 13, the substrate 10 and the seal plates are stacked on one another. A crosspiece at the outer end of the trough enables the chin of one party to urge the end of the device deeper into a body orifice. The lamp assembly can be used in substitution for a conventional wedge-based push-fit bulb. A timing circuit is provided for controlling the word line enable device, the column select device, and the read, write, and refresh operations in response to a word line timing pulse. An apparatus for measuring systemic andor pulmonic blood pressure in accordance with the present invention includes a sensor assembly comprising a housing, an electronic module, a shock dampener, a mounting means, a transducer, an acoustic coupling and a back cover.