Patent ID: 8072579

Claim:
A method of measuring precision in shot arrangement on a substrate by using an exposure apparatus for scanning an original and the substrate relatively so as to project a pattern of the original to the substrate via a projection optical system, the measuring method comprising: a first step of transferring a measuring mark disposed on the original to the substrate at a plurality of locations; a rotating step of moving a substrate stage which holds the substrate after performing the first step, so that the substrate is rotated by 90 degrees about a rotation axis that is parallel to an optical axis of the projection optical system; a second step of transferring the measuring mark to the substrate at a plurality of locations after performing the rotating step, so that the measuring mark overlaps a transfer region in the first step; a first measuring step of measuring positional deviations of first overlap marks in an overlap region where the transfer region in the first step overlaps a transfer region in the second step, the first overlap marks being overlapped between the measuring marks transferred in the first step and the measuring marks transferred in the second step; and a calculating step of calculating at least one of a positional error of a shot on the substrate, a rotational error of the same, and an orthogonality in shot arrangement based on a measurement result in the first measuring step.