How to Show the Magnetic Field of a Magnet

Magnetic field around a magnet is

You are given the magnetic field pattern of a magnet. How will you find out from it where the magnetic fields is the strongest ?

Introduction|Bar Magnet|Pole Strength & Magnetic Dipole|Electrostatics Analogous|Magnetic Field|Magnetic Field Due To Single Pole|Magnetic Field Due To Bar Magnet|At Axis|At Perpendicular Bisectors|At General Point

Magnetic Field And Field Lines

Question based on Magnetic field of a solenoid | Magnetic field lines | Magnetic flux and Gauss law for magnetism

How can a small compass needle be used to map the magnetic field due to a bar magnet?