B"H This liquid filled pressure gauge measures pressure from 0-200 PSI. Ideal for hydraulic or pneumatic systems, compressors, pressure washers, and other fluid power applications. The 0-200 PSI range is a popular choice for pressure washer monitoring, hydraulic brake systems, and compressed air storage tanks where working pressures exceed standard shop air. Liquid filling dampens needle vibration for stable, accurate readings in high-pulsation environments.