ZM-104A Impedance meter.

Impedance meter from TOA. Requires four AA batteries. Includes case. Features: Measures impedance of speaker lines up to 100k ohms Batteries required: four (AA) (Batteries not included) Zero adjustment for accuracy on all ranges Range Selection: x1, x10 & x100 Easy to read meter calibrates directly in ohms Includes carrying case, test leads and impedance to power reference chart Five year warranty