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W-FI Field Indicators by Western Instruments are disposable magnetic field indicators for use before or after Magnetic Particle Inspection. When shipped, they are confirmed to be within +/- 5% of the scale value on the dial. When Quality Procedures require recalibration, the W-FI can be replaced with comparable or better economy than calibratible field indicators.

The W-FI Field Indicators come in three models:W-FI-10: -10 – +10 – for demagnetization; adjusted during manufacture in a Homogeneous Field

W-FI-20: -20 – +20 – check residual fields on small parts; adjusted during manufacture for Surface Field

W-FI-50: -5- – +50 – check residual fields on heavy parts; adjusted during manufacture for a Surface Field

Verification Fixtures are available for each model to confirm the accuracy of the readings. Each Verification Fixture has a certification decal indicating the date of Field Confirmation.