An example of DIAL'S PATENT SPEED INDICATOR as produced by Lintner & Sporborg, Gloversville, New York. Patents were issued to Wilbur F. Dial of Bridgeport, Connecticut on December 31, 1889 and November 14, 1893 for the conceptions of mechanical genius embodied in this tool. The indicator retains nearly all of its original finishes and is in top condition in its original velvet-lined fitted case, complete with the original instructions. Length = 9.00 Inches (Ref. Id No.: 448222) [Free Shipping]