Inventors:
Robert W. Ellis - Cincinnati OH
Assignee:
General Electric Company - Cincinnati OH
International Classification:
G01B 322, G01B 500
Abstract:
An apparatus for measuring flatness of a surface includes a locator element slidingly engageable with a slider element in a first direction, and a height measuring instrument having a linear probing device is mounted to the slider element. An alignment feature is used for limiting relative motion between the sliding element and the locator element to the first direction when the slider element is engaged with the locator element. An exemplary embodiment includes a locator block having a top side and a bottom side and a slider block engageable with the locator block on the top side. An elongated aperture is disposed through the locator block and is elongated in the first direction. A mechanical dial indicator with a plunger rod projecting is mounted in the slider block and the plunger rod is positionable through the elongated aperture. A recessed slideway is disposed in the top side of the locator block and the slider block has a squared off end conforming to shape of the recessed slideway to limit relative motion between the blocks to the first direction.