The Department of Defense, through the Defense Logistics Agency (DLA Aviation), is seeking quotes for the procurement of four Ratio Units, NSN 6680004436552, as part of a Combined Synopsis/Solicitation. The units are required to be delivered to the DLA Distribution Depot Hill within 171 days after order placement, with the approved source being 89305 177014T2. These instruments are critical for measuring and controlling applications within military operations. Interested vendors must submit their quotes electronically, as hard copies of the solicitation will not be available, and any inquiries should be directed to the buyer via email at DibbsBSM@dla.mil.