This is a Sources Sought Notice for a 3D photometric stereo microscope system needed by NIST for research in surface topography, forensic toolmark analysis, and 3D printer identification. The system must accurately scan transparent and translucent materials (e.g., glass, polymers) with steep slope angles, meeting minimum specifications including a 1 MP sensor, 5 µm lateral resolution, 1 µm vertical resolution, and an 8 mm x 8 mm field of view. The contract requires one complete system with perpetual software license, calibration artifacts, and a Windows computer, with all items being new and non-experimental. No budget amount or performance location is specified in the notice. Responses are due by email as soon as possible, with questions accepted until 5:00 p.m. Eastern Time on April 30, 2026.