GREYWALL INC

Capabilities

Greywall Incorporated, dba Absolute Metrology Services, supplies interferometric and optical testing services. We are able to test transmitted wavefront error, surface flatness, spherical surface error, radius of curvature, and surface roughness. We perform optical certifications of flat and spherical surfaces, including transmission flat certifications and transmission sphere certifications, accurate to 1/200th wave. We perform interferometer calibrations. We provide third-party optical testing services to settle customer-supplier disputes.