A gaming device including a first and second indicator plate which are adjacent to each other and on the same axis where the second plate overlaps at least a portion of the first plate and the first and second plates are in different planes. The Darlington transistor pair may be configured to generate an output signal at an output node in response to an input signal received through an input node. The longitudinal blocks are closed in all other situations. The laser system comprises a laser chamber filled with an F2-containing laser gas, discharge electrodes located in the laser chamber, a laser resonator and a line-narrowing module located in the laser resonator with a wavelength selection element, so that a line-narrowed laser beam emerges from the laser resonator. The fuel-sealing support portion is bonded to the membrane by the resin at a position closer to an outer edge of the membrane than is the cathode catalyst.