What Is A Dial Test Indicator?

The dial Test Indicator is a sensitive instrument having a graduated dial and an indicating hand which is connected through a system of multiplaying levers, or gears, to a contact point that is fastened to the end of a spindle. The cantact piont is placed in contact with the workpiece. Any movement of the contact point is transmitted through the spindle, greatly amplified by the international works, and displayed by a movement of the indicating hand on the dial. Dial test indicators are designed to read to .001inch,.005inch, or .0001inch.The reading of the divisions is usually marked on the dial face.They are made in a great variety of sizes and shapes. Indicators are widely used in machine shops, and tool and dial shops in combination with many other forms of gaging and measuring devices. In the shop , dial test indicators are frequently simply referred to as “indicators�?