E-Meter is a shortened term for electropsychometer. It is a religious artifact used as a spiritual guide in auditing. It is for use only by a Scientology minister or a minister-in-training to help an individual locate and confront areas of spiritual upset.

By itself, the E-meter does nothing. It is an electronic instrument that measures mental state and change of state in individuals and assists the precision and speed of auditing. The E-Meter is not intended or effective for any diagnosis, treatment or prevention of any disease.

As stated earlier in this site, the mind is made up of mental image pictures which have mass and energy. When a person thinks a thought, looks at one of these pictures or re-experiences some painful memory, he is moving and changing the mental mass and energy of the mind.

What makes the E-Meter react is the impingement of these mental image pictures against the body. A person receiving auditing holds two plated cans which are hooked up to the electronic components of the meter. The meter sends a miniscule electrical current (approximately half a volt) through the body, about the same amount of current as in the average battery-powered wristwatch.

Changes in the mental masses of the mind affect the tiny flow of electrical energy generated by the E-Meter and this change is registered by movement of a small, sensitive needle on the face of the meter. A reaction which causes the needle to move indicates an area of upset or trauma and this guides the auditor in locating what should be addressed in auditing.

The E-Meter thus measures changes that are caused by the spiritual being in his own mind (i.e., the movement of mental masses around him) and in this capacity it is a religious artifact.

The E-Meter is used to help the individual who is being audited uncover truth. By locating areas of mental or spiritual trauma, the E-Meter helps both the auditor and the preclear locate exactly what to address in auditing.