The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking suppliers for a transmitter related to pressure measurement, identified under the title '66--TRANSMITTER,PRESSUR'. This procurement involves pressure, temperature, and humidity measuring and controlling instruments, which are critical for various defense applications. Interested vendors can reach out to Helen I. Carmelo at (215) 697-1138 or via email at HELEN.I.CARMELO.CIV@US.NAVY.MIL for further details regarding the presolicitation notice.