Device adaptable to dial gauges for measuring internal diameters (Machine-translation by Google Translate, not legally binding)

摘要

Device adaptable to dial gauges for measuring internal diameters, characterized by being made of a cylindrical metal piece finished off on one of its bases by a perfectly polished cone whose angle at the apex x = 53º6'24 "has been calculated in such a way that the diameter of any section made on it by planes parallel to the base, is of a magnitude exactly equal to the height of the cone resulting from the section in each case, being this piece in a support body consisting of a cylinder a hollow whose interior runs freely within the limits fixed by a stop screw disposed in the lower part of the body, a screw that penetrates a recess or guide made in the cylindrical area of the cylindrical-conical piece of measurement, which allows said piece emerges from the body only in the conical area of the same. (Machine-translation by Google Translate, not legally binding)