Abstract: A laser measuring device which comprises a horizontal rail, a vertical pole slidable on the horizontal rail, a laser source mounted on the vertical pole for sliding movement in the longitudinal direction of the vertical pole, a ferromagnetic web provided on each of the horizontal rail and the vertical pole and extending in the longitudinal direction of the horizontal rail or the vertical pole, respectively, a self-retractable tape measure provided on each of the horizontal rail and the vertical pole and extractable in the longitudinal direction, a paramagnetic member attached to the leading end of each tape measure; and an engaging member provided on the leading end of each tape measure and engageable with the base portion of the vertical pole or the mounting base of the laser source.

Abstract: An apparatus for detecting a steering angle and a steering angular velocity of a steering mounted in a vehicle. The apparatus has a sensor mounted on a steering column tube, and a disc secured onto the outer periphery of a steering shaft. The steering column tube has a projecting form in which a luminescent element and a light receiving element are provided. The projecting form is designed not to contact with the disc.

Abstract: An apparatus for detecting a rotating angle and an angular velocity of a rotation member, such as a steering column mounted in a vehicle, and a method of assembling it. The apparatus has a disc secured onto an outer peripheral portion of a steering shaft, and a sensor mounted on a steering column tube. The steering column tube has a projecting form into which a luminescent element and a light receiving element are provided. The projecting form is designed not to contact with the disc.