B"H This liquid filled pressure gauge measures pressure from 0-100 PSI. Ideal for hydraulic or pneumatic systems, compressors, pressure washers, and other fluid power applications. The 0-100 PSI range is one of the most versatile in industrial settings, covering the full working range of most air compressors, pneumatic tools, and general-purpose compressed air systems. Liquid filling dampens needle vibration for stable, accurate readings in high-pulsation environments.