The Department of Defense, specifically the Department of the Navy, is seeking to procure 15 units of a pressurizing altimeter under a presolicitation notice. The procurement is limited to a single source due to the specialized nature of the item, which requires acquisition or repair from designated sources as per DoD-STD-100, and no suitable technical data or manufacturing knowledge is available for alternative sourcing. This equipment is critical for pressure, temperature, and humidity measurement and control, and the delivery is expected at the DLA Distribution San Joaquin in Tracy, California. Interested parties must express their interest and capability within 45 days of this notice, and inquiries can be directed to Heather R. Jones at (717) 605-4866 or via email at HEATHER.R.JONES52.CIV@US.NAVY.MIL.