The Starrett Series 711 Last Word dial test indicator has a balanced dial, a swiveling body, and inch measurements. The horizontal-face dial test indicator has a hard, chrome-plated, steel ratchet contact point for taking precise measurements in machining, layout, and inspection work. The carbide, ball-contact tip reaches into the workpiece for accurate measurements of turned, milled, and ground parts, and for tool setting gauges, fixtures, and inspections. It has a balanced dial and a white face with half-yellow shading for accurate reading when used with a mirror or in a bore jig application. The positive reversing switch changes the reading direction. The indicator has a swiveling tubular body that can be mounted from the top or the body of the indicator using a body clamp, friction holder, or shank. The indicator has a jeweled lever action for smooth operation, and a replaceable contact point. This dial test indicator meets or exceeds accuracy and performance requirements of national and international standards, and is traceable to the United States National Institutes of Standards and Technology (NIST). The indicator includes a body clamp, three interchangeable contact points (0.9mm, 1.6mm, and 3mm), a universal friction holder with a shank, a universal shank with a long and short arm, a double-jointed attachment, a height gage attachment, a surface gage attachment, a coupling with a 3/16 inch (4.8mm) hole, and a storage box.
Dial readings with three digits, such as 0-10-0, signify that the indicator has a balanced dial. Dial readings with two digits, such as 0-100, indicate that the dial has a continuous dial. Balanced dials are used to read the difference from a specific surface reference point. Continuous dials are used for direct readings and usually have a larger measurement range than balanced dials.
Dial indicators are also called dial gauges, dial calipers, and probe indicators. These precision measuring tools are used to accurately measure small linear distances and object sizes. The dial magnifies the measurement so that it can more easily be read by the human eye. Frequently used in manufacturing, laboratories, and other industrial or mechanical fields, dial indicators are used anywhere a small measurement must be found and recorded or transferred, such as checking the variation in tolerance of a workpiece. Standard dial indicators measure the displacement along the axis of the indicator. Dial test indicators are very similar to dial indicators, except that the axis of measurement is perpendicular to the axis of the indicator. Dial and dial test indicators can be analog, with a mechanical dial, or electronic, with a digital display. Some electronic models transfer the data electronically to a computer for recording and potential manipulation.
The L.S. Starrett Company manufactures precision measuring tools, metrology and testing equipment, and saw blade products. The company was founded in 1880 and is headquartered in Athol, MA.