Fowler 52-562-004-0 Vertical White Dial X-Test Indicator, 0.0005 Graduation Interval, 0.060 Maximum Measuring Range, 1-1/2 Diameter. It has twice the range of most indicators. On rotation accuracy is .0004 and accuracy for full travel is .0012 This vertical white dial indicator has 210° swivel arc, 5/32 with tungsten carbide point: .080. It has a revolution counter and automatic reversal. 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 work piece. 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. Fowler, an American company, manufactures inspection and measurement instruments such as electronic indicators, calipers, bore gages, and digital scales. The company, founded in 1946, is headquartered in Newton, MA.