Abstract: A vehicle tire inspection apparatus includes a flat plate, a flexible bladder containing a quantity of fluid, and transducers on the plate. The plate is made of a transparent yieldable resilient bendable material capable of transmitting an inflated vehicle tire footprint and of undergoing a deflection in response to the supported weight on the tire applied thereon. The bladder is supported on the top side of the plate and has an upper opaque portion of a first color, a lower transparent portion and an enclosed interior cavity. The fluid contained within the cavity is of a second color different from the first color of the upper bladder portion.

Abstract: A printing plate registering method and device having a substantially flat working surface. A punch is provided for punching holes through printing plates and through masking flats located on the working surface. A pair of pin members is provided extending above the working surface and insertable in holes located in a lateral row along one edge of the printing plate. The pin members impart a lateral tension along the row of holes, causing the printing plate to be registered with respect to the pin members and with respect to the working surface. The pin members tangentially nest in the laterally outermost tangent point of such pre-punched register holes, causing precise lateral and longitudinal registering. Selectable pairs of pin members are provided to allow for centering of the printing plate on the easel body. Pairs of such pin members are extendable or retractable upon rotation of a shaft having cam grooves therein.

Abstract: A positioning jig for positioning copy material on the copybord of an offset print plate maker in order to make a photographic print plate bearing an accurately aligned image of the copy material. The positioning jig is provided with means for accurately positioning the copy material without the positioning stops casting an image which is photographically perceptible by the plate maker. The positioning jig includes a base having a substantially flat top facing surface defining a plurality of recessed positioning stops. Each of the positioning stops includes a pair of mutually perpendicular side walls having a relatively low height with respect to the length of the side walls. The base is formed by blasting a transparent acrylic sheet with an 80 grit aluminum oxide material so that the top facing surface is sufficiently irregular to permit light striking the surface to become randomly diffused in the base.