Overview
The 3D Instruments 25544-26B54 is a direct-drive precision pressure gauge engineered for accurate measurement in test and diagnostic applications. This used gauge features a 0-300 PSI measurement range and delivers the reliability 3D Instruments is known for in aerospace, industrial, and hydraulic service environments. Direct-drive technology provides immediate needle response without mechanical lag, ensuring precise readings under varying pressure conditions.
Key Features
- Direct-drive bourdon tube mechanism for rapid response and accuracy
- 0-300 PSI measurement range suitable for light to moderate pressure systems
- Precision dial face with clear, legible markings
- Durable construction for shop floor and field testing
- Standard 1/4″ NPT connection (verify for your application)
Technical Specifications
- Pressure Range: 0-300 PSI
- Gauge Type: Direct-Drive Precision Test Gauge
- Series: 3D Instruments Roylyn (25544 Series)
- Dial Arc: 135° (standard for 3D Instruments direct-drive models)
- Accuracy: Class 1.6 (0.5% full scale, standard for direct-drive bourdon gauges)
- Connection: 1/4″ NPT (bottom connection, verify for your system)
- Condition: Used, fully functional and tested
- Manufacturer: 3D Instruments LLC, Huntington Beach, CA
Typical Applications
- Hydraulic system pressure monitoring and testing
- Pneumatic circuit diagnostics
- Equipment performance verification
- Pressure relief valve calibration and testing
- Maintenance shop reference standards
- OEM test bench and production line verification
Compatibility & Replacements
Compatible With
- Hydraulic systems (light to moderate pressure)
- Pneumatic test systems
- Industrial pressure measurement circuits
- Aerospace and defense equipment platforms
- Standard 1/4″ NPT port connections
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 25544-26B54 is a direct replacement for identical 3D Instruments models requiring a 0-300 PSI gauge. Other 3D Instruments 25544 series gauges with different pressure ranges (e.g., 25544-25B54, 25544-27B54) are not interchangeable without recalibration and system verification.
Works With
- 3D Instruments test equipment ecosystems
- Standard ISO 1219 hydraulic circuit layouts
- Pneumatic ISO 1219-1 standard systems
- Manual and automated pressure testing rigs
- Calibration and certification workflows (NSN approved)



