Fowler 52-580-109 AGD Black Face Indicator and Stand Combo, 0.001″ Graduation Interval, 0-1″ Measuring Range, 2.25 Dial Diameter Price: $134.67 (as of 12/27/2020 20:26 PST- Details) & FREE Shipping.


The Fowler 52-520-109 dial indicator with hydraulic-arm magnetic base has an American Gage Design (AGD) Group 2, 2-1/4″ dial face with a continuous dial, a 0.40″ measuring range, 0.001″ graduations, a revolution counter, and tolerance markers, and is designed to measure surface variations in fractions of an inch. The indicator is dustproof, waterproof, oil-proof, coolant-proof, and shockproof. The 0-100 continuous dial with revolution counter has a total measuring range of 0.40″ and 0.001″ graduations, with each revolution equal to 0.1″. An adjustable bezel and dial sets the zeros the reading at any location. Tolerance markers allow operators to observe limits at a glance. The magnetic base has a 75lb. pull and a hydraulic arm that eliminates vibration and movement during use, and can be micro-adjusted on two ball sockets. An on/off lever releases the magnet.

The set includes a dial indicator and granite-base stand. Dial readings with three digits, 0-10-0 for example, signify that the indicator has a balanced dial. Dial readings with two digits, 0-100 for example, indicate the dial has a continuous dial. Balanced dials are used for reading 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 face type and diameterAGD Group 2, 2-1/4″ diameter face
Dial type and readingContinuous 0-100
Range and graduations0-1″
RevolutionsUp to 10 revolutions, each revolution equal to 0.10″
Base materialGranite
Base dimensions2 x 6 x 6 inches (H x W x D)
Column height8″
SpecificationsAGD Group 2

H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

Dial indicators are also called dial gauges, probe, and electronic indicators. These precision instruments measure small linear distances and object sizes. The dial magnifies the measurement so that it can be easily 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 Fred V. Fowler 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.

What’s in the Box?
  • Dial indicator
  • Granite-base indicator stand

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