***THIS IS A SOURCES SOUGHT NOTICE*** BACKGROUND The National Institute of Standards and Technology (NIST) is seeking information from sources that may be capable of providing two precision 1-circle segment stages (goniometers) that are capable of supporting a load of at least 50 kg with required cabling under the authority of FAR 12. The North American Industry Classification System (NAICS) code for this acquisition is 334516 Analytical Laboratory Instrument Manufacturing. The NIST neutron imaging team, in the Radiation Physics Division of the Physical Measurement Laboratory, is developing a far-field grating neutron interferometer to measure the projection of the pair correlation function, G(Z), of a sample of interest. This interferometer geometry requires aligning two phase gratings in pitch, with respect to the neutron beam axis. The Phase Grating Pitch Alignment system will support other components and must be cable to control a large load. Specifications for a two precision 1-circle segment stages (goniometers) that are capable of supporting a load of at least 50 kg with required cabling. The tilt stage shall be a 1-circle segment (goniometer) and have a travel range of at least +/- 15 degrees (larger is better) The tilt stage shall have an angular resolution of at least 0.002 degrees (smaller is better) The tilt stage shall have a maximum load of 50 kg (larger is better) The tilt stage shall have a mass of less than 5 kg (without motor) The tilt stage shall include a motor (DC or 2-phase stepper) with a cable at least 1.5 m in length. The tilt stage shall have a mounting surface that is greater than or equal to 150 mm by 50 mm and have at least four tapped thru holes for mounting other objects to the tilt stage. HOW TO RESPOND TO THIS NOTICE In responding to this notice, please DO NOT PROVIDE PROPRIETARY INFORMATION. Please include only the following information, readable in either Microsoft Word 365, Microsoft Excel 365, or .pdf format, in the response: Submit the response by email to the Primary Point of Contact and, if specified, to the Secondary Point of Contact listed in this notice as soon as possible, and preferably before the closing date and time of this notice. Please note that to be considered for award under any official solicitation, the entity must be registered and “active” in SAM at the time of solicitation response. Provide the complete name of your company, address, name of contact for follow-up questions, their email, their phone number and, if your company has an active registration in https://sam.gov, your company's Unique Entity ID (UEI). Identify the equipment that your company sells that can meet the objectives addressed in the BACKGROUND section of this notice. For each product recommended to meet the Government's requirement, provide the following: Manufacturer name Model number Technical specifications Country of Manufacturing If your company is not the manufacturer, provide information on your company's …