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 Instrumentation
 REFERENCE MAGNETS and MAGNETIC POLE FINDER
Magnetic Pole Detector 
Point this palm-sized detector at your magnet and press the button—the red light indicates north, the green light indicates south. Operation is completely electronic, eliminating demagnetization. Unit has a sensitivity of ±150 gauss, is 5 1/2" Lg. x 1" Wd., and is powered by four 1.5-volt batteries (included).
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POLARITY DETECTOR
| POLARITY DETECTOR FEATURES |
-pocket detector revealing the magnet's polarity
-complete of leather casing |
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Laboratory Standard Reference Magnets
Precision References for Accurate Magnetic Calibration
Laboratory Standard Reference Magnets from Walker Scientific provide a convenient and reliable means of verifying the calibration of magnetic measuring instruments such as gaussmeters, fluxmeters and their respective sensors.
Transverse units have an extra-large aperture to accommodate a wide selection of Hall probes and search coils. Both Transverse and Axial units provide an extra-large area of field uniformity, which makes instrument and sensor calibration easy and accurate by allowing fast and precise probing of the reference magnet's peak field.
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Features
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- High stability permanent magnets have been selected which are preaged and screened to reduce instability caused by extreme temperature variation, careless handling and accidental exposure to strong external magnetic fields.
- Monolithic construction has been used to enhance temperature stability and insure that long-term calibration accuracy will not be affected by day-to-day handling.
- Heavy duty shielding is used to reduce stray fields that might be generated from within the magnet and reduce the effect of external fields that are generated outside the magnet, which might otherwise affect the magnet's calibration.
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MAGNETIC SENSITIVE FILM
The magnetic sensitive film is a micro-encapsulated film which enables the user to view a static magnetic field such as commonly emitted by permanent magnets or dc electromagnets. Simply placing the film directly on the surface of the magnetic material in question can instantly reveal a magnetic field of any shape or pattern as well as the poles number. By placing it on a magnet, the neutral areas are revealed, that means the polarity inversions North-Souoth and vice-versa. The neutral areas are white coloured, while the poles are darker (more darker than the film's colour)
The highly flexible film easily conforms to magnetic surfaces with any degree of convexity or concavity.
The film is sensitive to 50 Gauss( 5mT) or higher magnetic field.
It is available in two formats:50x50 mm (PDL-50) - 90x100 mm (PDL-100)
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