Abstract: The invention provides a center lock device for automobile wheels wherein a center shaft portion integrally projects forwardly from the conical barrel of an adapter in the form of a top type or cylinder hat type, and a center nut is threadedly engaged with a male thread cut in the center shaft portion whereby a wheel disk is removably exchangeably fixed to the hub of an axle. The center lock device being characterized in that in order to attain durability strength, safety and steal prevention in the wheel attached state, the center shaft portion is centrally formed with a female thread for receiving a keep bolt such that the spiral pitch and spiral direction of the female thread differ from those of the female thread, and a keep bolt having a head larger in diameter than the center shaft portion is threadedly engaged with the female thread from the front, so that the center nut is locked against loosening by the large-diametered head of the keep bolt.

Abstract: An automotive vehicle wheel of light alloy including a main disk (21) and a second disk (22) having bosses (25, 46) respectively for attachment to a hub (26) of an axle, peripheral edges (23, 42) for attachment to a rim (R) of the wheel, vent holes (28, 52) formed in intermediate regions (27, 51) between the bosses (25, 46) and the peripheral edges (23, 42) of the disks and an adapter plate (A) for attaching the disks to the hub (26) for rotation as a unit about an axis of rotation (0--0). The adapter plate includes threaded holes provided normal to a conical surface to receive screw clamping devices for securing the disks which extend at an angle (.theta.) relative to the axis of rotation (0--0).

Abstract: A microscope apparatus includes a microscope body having a mounting section. An observation unit is removably fitted to the mounting section, and includes an objective lens unit and a tip unit. The lens unit has an objective lens opposed to an observation surface and forms an optical image of the surface viewable through the microscope body. The tip unit includes a support member attached to the mounting section, and a glass plate supported by the support member to be located between the objective lens and the observation surface. A fine conductive tip is fixed to the glass plate and extends therefrom toward the observation surface, in the direction of an optical axis of the objective lens. A piezoelectric section for shifting the glass plate is fixed to the support member.

Abstract: An image information output apparatus has a position specifying section for generating a cursor line signal intended to cause two vertical cursor lines to be displayed superposed upon a picture image corresponding to an image signal of an ITV camera, and an integrator for integrating image signal components corresponding to a region between the cursor lines. The integration output signal of the integrator is converted into a measured line picture image signal, which is displayed on a monitor television device together with the picked-up image.

Abstract: A vehicle wheel attaching device for removably attaching general-road traveling wheels to the hubs of a vehicle by utilizing an independent adapter in such a manner as to enable transmission of torque. The adapter is made approximately in the form of a top hat as a whole and is bent at its top to form a dish spring surface for contact with the head of a center bolt which is pre-fitted thereto so as to extend therethrough. A center nut is applied to the projecting front end of the bolt, the nut being tightened to cause elastic action of the top surface of the adapter, thereby fixing the wheel in position in a non-rigid condition.