The product is an Innova Vacuum Gauge model 3620 designed for use on passenger vehicles. 

It is a diagnostic service tool used to measure vacuum pressure in the vehicle's system. 

This tool is manufactured specifically for automotive use and is a part of the Innova brand, known for producing high-quality diagnostic tools for vehicles. 

The vacuum gauge 3620 is a useful tool for troubleshooting and maintaining the vacuum system in a passenger vehicle.