The Department of Commerce, specifically the National Institute of Standards and Technology (NIST), is seeking sources for a large aperture high-vacuum compatible rotary stage to enhance its measurement capabilities in nanoscale device characterization. The rotary stage must meet specific requirements, including the ability to rotate a mass greater than 3 kg along a 135° arc, accommodate a clear aperture of at least 135 mm, and operate within a vacuum chamber at pressures below 10^-6 Torr. This equipment is crucial for non-destructive measurements of nanoscale patterned features, supporting advancements in the American semiconductor industry. Interested vendors should respond to the primary contact, Elizabeth Timberlake, at elizabeth.timberlake@nist.gov, providing detailed information about their capabilities and products by the specified deadline, as this notice is part of market research and does not constitute a solicitation.