Starrett No 107 Speed Indicator Tool OS Silver Good Vintage Machinist RPM Gauge Vintage L.S. Starrett No. 107 speed indicator tool features a nickel-plated finish and a black handle. This machinist's instrument is designed to measure the revolutions per minute (RPM) of shafts and spindles. The dial face is clearly marked with increments and includes the manufacturer's engraving from Athol, Mass. U.S.A., along with patent dates from 1897 and 1905. It is a functional piece of industrial history, perfect for collectors of antique precision tools or for use in a traditional machine shop setting. Brand: L.S. Starrett Co. Model: No. 107 Material: Nickel-Plated Steel Origin: Athol, Massachusetts, USA Era: Early 1900s Machinist, Steampunk, Industrial, Antique Tool, Engineering Please see all photos for more on the description #Industrial