Patent ID: 8479568

Claim:
Apparatus for measuring variations in the flatness of an Almen strip supporting fixture having an Almen strip holding surface said apparatus for measuring comprising: a gaging block having parallel surfaces, said gaging block defining an aperture extending between said parallel surfaces and being bounded between opposite side edges and opposite end edges said edges bounding an almen strip, one of said parallel surfaces engaging said holding surface, said aperture exposing said holding surface, said gaging block being secured to said fixture to prevent relative movement between said gaging block and said fixture; and a cross member extending across said aperture and carrying a probe extending through said aperture and engaging said holding surface and movable relative thereto to measure variations in flatness of said surface, said cross member including opposite end portions slidably engaging the other of said parallel surfaces whereby said cross member and said probe are movable across said holding surface between said side edges and said end edges, said Almen strip supporting fixture including openings for receiving fasteners for holding an Almen strip on said strip holding surface of said Almen strip supporting fixture, said gaging block having openings adapted for alignment with said openings on said Almen strip supporting fixture, and fasteners extending through said openings in said gaging block and said Almen strip supporting fixture.