Abstract: A display is provided having five light-emitting elements, constituting a first light source, are provided on the surface of a wiring board. These sources illuminate a graduated board and a light-emitting indicator. A single light-emitting element, constituting a second light source, is provided on the surface of the wiring board as an illumination light source for use on the graduated board so as to oppose a concave portion of the light-guiding plate via the opening portion of the holder on an outside of one of the respective light-emitting elements.

Abstract: A meter for a vehicle has a scale plate, a pointer and a plurality of light sources. A first light source lights a scale plate up from a backside thereof. A second light source lights the scale plate up through a light guiding plate. A third light source lights a pointer up from a base thereof. The first light and the second light have different colors. The first and second lights and the third light are activated with time lag. The light sources produce a novel appearance on the meter.

Abstract: A method for mounting electronic parts on a printed board using a computer, an optical indicator controlled by the computer to optically indicate a position of insertion on the printed board into which an electronic part is to be inserted, and a parts locator having a plurality of pockets and controlled by the computer to rotate and open only one pocket is disclosed. Parts taken out at random from a parts box are put into opened pockets of a parts locator, or after the parts are inserted into the positions of insertion on the printed board indicated by the optical indicator, the remaining parts are put into the opened pockets of the parts locator. Subsequent mounting work can be performed only by taking out the parts from the pockets of the parts locator and inserting the parts into the optically indicated positions.