The Bourdon 4001-9LV-GF Pressure Gauge is a high-quality 4-inch diameter gauge designed for measuring pressures up to 15000 psi. Made in the United States by the reputable brand Bourdon, this pressure gauge is perfect for industrial applications requiring precise measurements. The gauge is filled with liquid at the bottom and is suitable for use in various fields such as hydraulics, pneumatics, pumps, and plumbing. With its reliable performance and durable construction, this pressure gauge is a valuable tool for monitoring and controlling pressure levels in various systems.