1. A system for contact measurement of at least one dimensional parameter of a container having a container finish comprising: means for conveying containers in sequence to an inspection station, means at said station for contacting a container at said station and providing an electrical analog signal as a combined function of warp, dip and cock of the finish of the container, means for receiving said analog signal and converting said analog signal to a digital signal, microprocessor-based electronic control means coupled to said receiving and converting means, including digital filtration means for separating warp, dip and cock signal components from said combined signal, and means for comparing said signal components to preset signal component thresholds, and means for displaying the result of such comparison in real time.