A light meter for testing screwdriver screwdriver electrical circuit or unplug electrical equipment, materials and components-smaller using pressure exists not so much Crow 2 characteristics:
Light is measured screwdriver screwdriver for testing electrical circuits, or for removal - of electrical supplies with a small force is not much to crow, there are 2 types.
Screwdriver screwdriver for measuring fire of a test circuit or removing material using electrical assembly with a small force. Not much will be 2 style. Is.