# Camera-based Fizeau Interferometer Canonical: https://abierto.us/opportunities/1333nd26qnb680415 - Solicitation number: 1333ND26QNB680415 - Notice type: Combined synopsis and solicitation - Status: Closed. Deadline was August 26, 2026 at 11:00 AM EDT - Department: Department of Commerce - Agency: National Institute of Standards and Technology - Contracting office: Department of Commerce NIST (1333ND) - NAICS: 334516 Analytical Laboratory Instrument Manufacturing - Product or service code: 6650 Optical Instruments, Test Equipment, Components and Accessories - Place of performance: Gaithersburg, Maryland - First posted: August 14, 2026 - Last posted: August 14, 2026 - SAM.gov: https://sam.gov/workspace/contract/opp/0a63c909b0ec460db90af5a346e916cb/view ## Description The National Institute of Standards and Technology (NIST) Dimensional Metrology Group (DMG), located in Gaithersburg, MD, delivers world class dimensional calibration services to support United States manufacturing and other industries. Of particular importance is the calibration of spheres, which serve as reference objects to universal length measuring machines and coordinate measurement machines used internally at NIST and by customers. The NIST DMG is seeking a camera-based Fizeau interferometer to replace ageing equipment responsible for the calibration of the diameter of spheres. A description of the existing equipment and its operation can be found here: https://www.nist.gov/publications/sphere-diameter-interferometry-nanometer-uncertainty. ## Publications - August 14, 2026: Combined synopsis and solicitation, due August 26, 2026 at 11:00 AM EDT. Notice 0a63c909b0ec460db90af5a346e916cb. https://sam.gov/workspace/contract/opp/0a63c909b0ec460db90af5a346e916cb/view ## Points of contact - Rene D. Edwards, rene.edwards@nist.gov, 3019756107 - Robert Singman, robert.singman@nist.gov, 3019756388 --- Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/1333nd26qnb680415.