Fowler 52-562-253 Girod "Horizontal" Test Indicator, 0.0001" Graduation Interval, 0.008" Maximum Measuring Range, 1" Diameter

The Fowler 52-562-253 Girod horizontal test indicator has a 1" diameter balanced dial, a 0.008" measuring range, 0.0001" graduations, three carbide contact points, a 210-degree swivel range, jeweled bearings in an isolated shockproof assembly, and a one-piece anti-magnetic housing, and is designed to measure surface variations in narrow or recessed areas. The 0-4-0 balanced dial has a total measuring range of 0.008" with 0.0001" graduations. An adjustable bezel and dial sets the zeros the reading at any location. The auto-reverse mechanism has adjustable ball-bearings to provide ultra-smooth lever action. Seven fine, jeweled bearings are housed in an isolated, shockproof assembly that is separate from the outer body to provide protection from the influence of external pressure. Three 0.5" interchangeable carbide contact points have 0.040", 0.080", and 0.120" ball diameters for use on a range of surfaces, and the contact point swivels 210 degrees to reach a variety of locations. Carbide contact points provide durability for surfaces with a hardness rating below that of carbide. Three separate dovetail mounts allow the indicator to be mounted from the top, front, and back of the indicator and two dovetail clamping stems with 7/32" and 1/4" diameter provide a range of clamping options. Anti-magnetic, one-piece body construction is chrome-plated to resist corrosion.

The set includes a horizontal-face dial test indicator with a balanced dial, three 0.5" long contact points with one each 0.040", 0.80", and 0.120" diameter carbide tips, one 7/32" diameter dovetail clamping stem, one 1/4" diameter dovetail clamping stem, and a fitted storage case. 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.

Test indicator gauges, also called gages, are precision instruments that measure short linear distances. They are commonly used for detecting deviations from tolerance limits, such as small variations in flatness or height of an inspected workpiece, and permit measurement in narrow grooves or small bores. A test indicator gauge consists of a ball-tipped contact point on a levered arm, also called a measuring insert, which pivots from a hinge point. The reading indicates the degree of angular displacement of the arm. Test indicator gauges are commonly used in manufacturing, machining, and mechanical engineering. Standard test indicators measure the displacement of the arm perpendicular to the axis of the indicator. Dial and electronic indicators are very similar to test indicators, except that the axis of measurement is parallel to the axis of the indicator. 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?

• Fowler-Girod horizontal dial test indicator
• Dovetail clamping stems (7/32" and 1/4" diameter)
• Carbide contact points (0.40", 0.80", and 0.12" diameter)
• Fitted storage case