Abstract: Disclosed is a cylinder head gasket which comprises: plural thin metal plates each having at least cylinder bores and fluid-passing bores being laminated to constitute laminated thin plates; the surfaces of the outermost thin plates of the laminated thin plates being coated with a composite material, respectively; and the surface of at least one of the thin plates adjacent to each other of the laminated thin plates being coated with the composite material to form a coating layer, whereby the adjacent thin plates are laminated with the coating layer sandwiched therebetween.

Abstract: A small-sized electronic calculator, which comprises a power source in the form of a solar battery having a film of polycrystalline photoconductive material, such as selenium. The solar battery is connected for angular movement to the calculator body by suitable connection means, such as a hinge and a foldable metal spring. The calculator body includes a display section of liquid crystal elements. The solar battery may include an overvoltage preventing circuit and a reset switch. The output of the solar battery may be converted to a digital value to indicate the luminescent by the display section.