10, 20 or 50 Gauss Field indicator

• - Check for Magnetism before testing
• - Check the Polarity of a Field.
• - Check Magnetism after Demagnetizing
• - Check the Direction of the Field

While simply mentioned in ASTM and ASME Specifications, Field Indicators are outline in the ASNT Handbook Nondestructive Testing Handbook, Second Edition: Volume 6, Magnetic Particle Testing (2nd Edition). These mechanical Field Indicators are an economical alternative to Hall Effect Gauss Meters.