Plate Surface Gauss
This data is to compare the additional field strength increase by stacking
the 4 x 6 x 0.5 N42 plates together
Note: UL means the upper left corner of the rectangle as it was measured
UR - Upper right, LL - Lower Left, LR - Lower Right and C is Center
Avg is the average of all these 5 readings.
The readings were obtained using a handheld gauss meter with about a 1.5mm dia
Hall Effect probe at the tip. The measurements were taken using a plastic grid
over the surface for repeatability - its thickness was 1/32".
4 x 6 x 0.5 - A single N42 Plate Magnets
UL UR LL LR Center Average
Surface 4070 4130 4250 4060 904 3482.8
0.8 270 275 290 300 613 349.6
1.6 180 160 170 215 422 229.4
2.4 118 134 145 135 282 162.8
3.2 98 100 100 100 188 117.2
4 72 78 73 75 128 85.2
4.8 56 56 56 56 90 62.8
5.6 45 45 45 43 65 48.6
6.4 35 35 32 32 49 36.6
7.2
4 x 6 x 1.0 - Two of the N42 Plate Magnets
UL UR LL LR Center Average
Surface 4320 4340 4310 4340 1600 3782
0.8 640 690 680 690 1250 790
1.6 475 450 390 430 870 523
2.4 265 295 250 270 580 332
3.2 200 220 190 195 390 239
4 140 148 150 145 265 169.6
4.8 102 122 110 110 188 126.4
5.6 86 90 86 85 130 95.4
6.4 68 70 66 67 98 73.8
7.2 53 53 53 53 73 57
8 42 43 43 42 57 45.4
8.8 34 34 35 34 44 36.2
4 x 6 x 1.5 - 3 of the N42 Plate Magnets
UL UR LL LR Center Average
Surface 4540 4500 4540 4700 2240 4104
0.8 800 860 820 850 1610 988
1.6 440 430 450 500 1120 588
2.4 325 330 360 390 755 432
3.2 260 265 245 265 506 308.2
4 185 190 195 200 350 224
4.8 146 146 148 152 250 168.4
5.6 110 115 110 115 180 126
6.4 90 90 90 98 130 99.6
7.2 70 70 70 72 100 76.4
8 60 60 60 60 77 63.4
8.8 47 48 48 48 61 50.4
9.6 37 37 38 38 48 39.6