The Department of Defense, specifically the Department of the Navy, is seeking to procure 41 units of the Transmitter Subassembly (NSN 7H-6680-015991697) through a presolicitation notice. The procurement is intended for supplies or services that will be negotiated with a single source, as the government does not own the necessary data or rights for alternative sourcing, making reverse engineering uneconomical. This equipment is critical for measuring liquid and gas flow, liquid level, and mechanical motion, which are essential functions in various defense applications. Interested parties are encouraged to express their interest and capability to meet the requirement within 45 days of the notice, and they can contact April N. Schlusser at (717) 605-7230 or via email at APRIL.SCHLUSSER@NAVY.MIL for further information.