Like new, just installed last year but now doing a glass cockpit. The UMA Altimeter is a product manufactured by UMA with a manufacturer part number of 5-410-20. It is an aviation part designed for use in aircraft avionics systems. The altimeter is used to measure altitude above a fixed level, providing crucial information to pilots during flight. UMA is a well-known brand in the aviation industry, known for producing high-quality instruments and accessories for aircraft.