Measuring Device Appraisal

Dial Caliper

This is a dial caliper, a precision measuring instrument primarily constructed from polished metal, likely stainless steel or hardened tool steel, given its common use in manufacturing and machining. The instrument features a long, rigid main beam with clearly engraved imperial measurements along its length. A movable jaw slides along this beam, connected to a prominent, circular yellow dial indicator. The dial's face is bright yellow with black markings, including numerical increments from 0 to 10 in a clockwise direction, and a smaller set of numbers below, indicating '0.001"'. A single black needle indicates the precise measurement by showing rotations on the dial. The construction is robust, indicative of a tool designed for accuracy and durability. There are two sets of jaws: larger external jaws for measuring outside dimensions and smaller internal jaws for inside measurements. A depth rod is integrated for measuring depths, though its full extent is not visible. The surface shows minor signs of wear consistent with a used tool, such as light scratches and scuffs on the metal beam and jaws, which is typical for a tool of this nature and does not appear to impede its function. No specific maker's marks are clearly discernible from the image, but the quality of the finish and the clarity of the markings suggest a well-made, possibly industrial-grade, instrument. Its style is typical of dial calipers produced from the mid-20th century to the present day, emphasizing functionality and precision over ornate design. The bright yellow dial is a distinctive feature, aiding visibility.