The National Institute of Standards and Technology (NIST) is seeking sources for a sample rotation system, specifically an air bearing rotation stage capable of carrying loads over 30 kg with high speed and precision, to support tomography measurements. The system must include cabling, control hardware, and software, with delivery to the NIST Gaithersburg campus. Key technical requirements include a rotation speed greater than 1000 RPM, position resolution better than 2 arcsec, and a central clear aperture at least 20 mm in diameter. Responses to this sources sought notice are due by July 15, 2026, at 10:00 AM ET, and should detail the company’s capabilities and product specifications. No budget amount is specified in the notice.