Creating an approximately inverse-square-law magnetic field over a plane surface presents significant challenges, primarily because such a field would require magnetic monopoles, which do not exist. The closest achievable magnetic field configuration would involve dipole-dipole interactions, which follow a r^-4 law instead. Experimental setups, such as using long iron rods or a magnetized rod in water, could demonstrate magnetic interactions but would not strictly adhere to the inverse-square law. Alternative mechanical arrangements, like potential wells or air cushion tables, may offer more feasible methods to simulate this force relationship. Achieving a precision of 1% in measurements will require careful experimentation and consideration of factors like friction and the geometry of the setup.