Excellon Technologies
Magnetic Sensor design apps & mfg. Low-cost, low or high volumes.
www.excellontech.com

4x4 Geometry
The surprising 322,560 symmetries to be found in a 4x4 square array
log24.com/theory/geometry.html

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www.CoHit.com

Baseball Products & Gifts
Hard to Find Hitting Aids, Videos, Tools for Bat Speed, Power & More.
www.HittingStore.com