The product is a Cessna United Instruments altimeter with the manufacturer part number C661071-0101 5934P-1, capable of measuring up to 20,000 ft for aircraft. This altimeter is essential for aviation purposes, providing accurate and reliable altitude readings to ensure safe and efficient flights. As a trusted brand in the industry, Cessna is known for producing high-quality avonics and indicators, making this product a reliable choice for aircraft altitude monitoring.