GREYWALL INC

d/b/a GREYWALL INC

Research & Scientific Services · East Hampton, Connecticut

SBA-certified WOSB

WOSB

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.

UEIJA2RSBPBL4Y5

CAGE7GH84

Primary NAICS541380

Established1997

Structure2L

CountyLower Connecticut River Valley Planning Region

Congr. district02

Metro areaHartford, CT

Contact

ADDRESS144 BEAR SWAMP RD, East Hampton, CT 06424

WEBSITEwww.absolute-metrology.com

PHONE8608839953

EMAILgreywalloptics@sbcglobal.net

Attn: MARIA ROBINSON

Provenance

Certification status reported as published by the U.S. SBA Small Business Search. Retrieved Sep 10, 2026; source last updated Jun 9, 2026. Womyn Owned does not issue or verify certifications. Confirm current status at the source.

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Certifications

WOSBsince Jun 2024 · through Jun 2027
WOSB — status as published by the U.S. SBA Small Business Search. Last verified 2026-09-10.

Specialties

Optical TestingSurface Roughness TestingWavefront TestingOptical Reference CalibrationTransmission Flat CalibrationTransmission Sphere CalibrationInterferometer CalibrationInterferometer MeasurementRadius of Curvature MeasurementSpherical Surface TestingMeasurementFlatness Testing

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