The Department of Defense, specifically the Naval Research Laboratory (NRL), intends to award a sole source purchase order for the recertification of Shaft Current Sensors and related equipment. The procurement involves calibration and validation of performance capabilities for Shaft Current Sensors and Carry-On Controllers, as well as the evaluation of alternate sources for a custom datalogger due to obsolescence. This technology is critical for naval operations and is uniquely designed, requiring proprietary calibration and testing equipment that only Ohio Semitronics, Inc. can provide. Interested parties may express their capabilities to the primary contact, Teigh Cheyney, via email at tahesha.c.cheyney.civ@us.navy.mil, although no competitive proposals will be accepted, and the procurement will utilize Simplified Acquisition Procedures under FAR Part 13.106-1(b) for purchases not exceeding $250,000.