Electro Magnetic Field meter

This is my early basic EMF meter,
it uses an LED display
rather than the usual panel meter,
for faster responses
and is visible in complete darkness.

Although this design has an external sensor coil, on future models it will be internal.

It also has a switchable sound output as it can cause annoyance during sensitive investigations.

It must be understood that this type of instrument is most sensitive to electrically generated magnetic fields and although widely used in paranormal research, it is not my preferred piece of equipment.