Home » inspection-mirrors » How to use an inspection mirror with a magnet base? How to use an inspection mirror with a magnet base? Chris 16th March 2020 How to use an inspection mirror with a magnet base? Shop for Inspection Mirrors Step 1 – Remove keeper If the magnet has a keeper on its base, remove the keeper and attach the tool to the desired surface. Step 2 – Angle mirror Once the mirror is attached, carefully move it to the correct angle using the two ball joints to move the mirror head.