TCAS VERTICAL SPEED INDICATOR - 066-50002-8101 - BENDIX KING for parts Used for parts but would look beautiful on a bookshelf. Give your space a touch of whimsy. I even have the original paperwork for the pulled piece. Have a unique decorator piece in your room You need a TCAS (Traffic Alert and Collision Avoidance System) VS (Vertical Speed) indicator because it provides pilots with visual and audio alerts, including recommended vertical maneuvers (climbing or descending), to help prevent mid-air collisions. What We are wholesaler/liquidators. We bought this in a lot of new items to resell. Our knowledge of this item is very limited. We are counting upon you to know what you are buying and if this item will suit your needs. This is being sold AS-IS. No returns. Please only purchase this if you agree to those terms.you see in the photos is exactly what you will receive. Shelf:26 LB listed 3/18/25