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A. Part No. GM1A
This hand-held instrument provides for the accurate (.25% of reading, ± one digit), quick (self-calibrating) and convenient (3.5 digit LED display) measurement of DC magnetic fields. Both flux density in gauss and polarity are shown. Use GM1A for magnet quality, classification and sample testing (9 volt battery included). Accepts a variety of pre-calibrated transverse, axial, bare and magnetometer probes (sold separately).

B. Part No. GM1APT70
Standard transverse probe is used to measure magnetic polarity and gauss.

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The following magnetizing forces are recommended by magnet manufacturers for various magnetic materials, expressed in Amp/turns required per inch of length
of magnet material:

  • Alnico 1,2,3 4000 Amp / turns / inch
  • Alnico 5,6 6000 Amp / turns / inch
  • Alnico 8, 9 10,000 Amp / turns / inch
    (varies by grade)
  • Ceramic 20,000 Amp / turns / inch
  • SmCo and NdFeB require capacitor discharge units.
  • Self-Contained Magnetizer

C. Part No. MAG24C
Capacity 24,500 Amp / turns
Size 10-1/8" L x 5-1/8" W x 7-9/16" H
Weight 40 lbs.

Will Magnetize Alnico 5 up to 2" x 3" long and Ceramic 5 up to 2" x 2-1/2" long. Typically used to magnetize alnico. Connects to standard 120 VAC (50/60 Cycles, 14 Amps) outlet. Adjust tapered pole shoes (up to 4" gap) to fit magnet length. Place magnet or assembly between poles and depress switch for one second. Repeating the cycle does not increase magnetization.


D. Part No. POLEIND01
Simply point the North-South pole indicator toward the magnet and read the pole letter in the viewing hole


E. Part No. POLEIND02
The electronic North-South pole indicator features LED lights to identify pole locations. Includes pocket clip, on/off switch and 4 LR44 batteries.

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