



NM01MFI2520
MAGNETIC FIELD INDICATOR (MAGNETOMETER) 20-0-20, R.B. ANNIS SKU: MFI2520
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R.B. Annis — Magnetic Field Indicator (Magnetometer) 20-0-20
Analog Field Indicator for Magnetic Particle Inspection SKU: MFI2520Overview
The R.B. Annis 20-0-20 Magnetic Field Indicator is a compact and reliable analog magnetometer designed for quick verification of magnetic field presence, direction, and relative strength during magnetic particle inspection (MPI). Widely used in field and shop environments, this instrument provides immediate visual indication of magnetic conditions without the need for power or complex setup.
Featuring a balanced scale from -20 to +20, the indicator allows operators to determine both the polarity and direction of the magnetic field, making it especially useful for confirming proper magnetization during MPI procedures. Its rugged construction and simple operation make it an essential tool for ensuring inspection accuracy and repeatability.
Ideal for NDT professionals, the R.B. Annis magnetic field indicator supports effective MPI setup verification across industries such as oil & gas, manufacturing, and structural inspection.
What's Included
| Item | Details |
|---|---|
| Magnetic Field Indicator | 20-0-20 analog magnetometer |
Box Dimensions & Shipping Weight (Estimated)
| Parameter | Imperial |
|---|---|
| Length | 6.0 in |
| Width | 4.0 in |
| Height | 2.0 in |
| Dimensions (L × W × H) | 6.0 × 4.0 × 2.0 in |
| Weight | 0.5 lb |
Key Specifications
| Parameter | Details |
|---|---|
| Measurement Type | Magnetic field indication |
| Scale Range | -20 to 0 to +20 |
| Display Type | Analog needle indicator |
| Operation | Passive (no power required) |
| Application | Magnetic field verification |
| Construction | Compact handheld device |
Performance Features
Directional Field Indication
Displays both polarity and direction of the magnetic field, helping verify correct magnetization.
Immediate Visual Feedback
Provides quick, real-time indication of magnetic field presence without delay.
No Power Required
Operates without batteries, ensuring reliability in all inspection environments.
Consistent Performance
Delivers dependable and repeatable results for routine MPI verification.
User-Friendly Design
- Simple, intuitive analog display
- Lightweight and easy to handle
- No setup or calibration required for basic use
- Ideal for quick field checks
Built for Industrial Environments
- Durable construction for daily inspection use
- Suitable for field and workshop applications
- Reliable performance in demanding conditions
- Designed for professional NDT workflows
Compatibility
Compatible with:
- Magnetic particle inspection (MPI) systems
- AC and DC magnetization equipment
- Yokes, coils, and prods
- Industrial inspection workflows
Ideal Applications
- Verification of magnetic field presence
- Checking field direction and polarity
- MPI setup validation
- Oil & gas and pipeline inspection
- Fabrication and welding inspection
- General NDT magnetic field checks
About R.B. Annis
R.B. Annis is a recognized manufacturer of magnetic testing instruments and inspection tools, known for producing reliable and easy-to-use equipment for NDT professionals. Their products are widely used for magnetic field measurement and verification in industrial applications.
