The Department of Defense, through the Defense Logistics Agency (DLA Aviation), is seeking quotes for the procurement of 22 units of a mechanical tachometer, identified by NSN 6680015134154. This solicitation is part of a combined synopsis/solicitation process, and the approved source for this item is 21439 9C00371-1. Mechanical tachometers are critical instruments used for measuring the rotational speed of machinery, which is essential for various defense applications. Interested vendors must submit their quotes electronically, as hard copies of the solicitation are not available, and all submissions must be received in a timely manner. For inquiries, potential bidders can contact the DLA at DibbsBSM@dla.mil, and further details can be accessed through the DIBBS website.