• Model 7 Universal AvoMeter

    New movement design but no external changes initially. At some point during the 1950's, added power factor jacks for P.F. unit and red and black banana terminals in 1956.

    Ranges;

    CURRENT: A.C. and D.C. 0 to 10 amps. 
    VOLTAGE: A.C. and D:C. 0 to 1,000 volts.
    RESISTANCE: Up to 40 megohms. 
    AUDIO-FREQUENCY POWER: 0-2 watts. 
    CAPACITY: 0.01 to 20 mFds. 

    POWER FACTOR AND POWER can be measured in A.C. circuits  by means of an external accessory (the Universal AvoMeter Power Factor and Wattage Unit). Two models of this Unit are available, one for use with the Model 7 Avo Meter and the other with the Model 40 AvoMeter, but in either case the Avo Meter must be a model fitted with sockets marked "P.F." for connection to the Unit. All recently produced Avo Meters have been fitted with these sockets.

  • Net weight (2.2 lb = 1 kg)
  • 2.4 kg / 5 lb 4.6 oz (5.286 lb)

The AVOmeter model 7 was a development of the original AVO multimeter which started life back in 1923, and although that was initially a DC-only instrument many of its features remained almost unaltered right through to the meter shown here.  In particular the mirror scale, the "smiley" meter scale, the two switches and two terminals. AVO multimeters are renowned for their reliability and robustness, the early incorporation of a mechanically operated cut out linked to the meter movement and the two switch range selection system have endeared these meters to generations of electrical and electronic engineers. By 1965, the company had already created over one million AVOmeters. 

The model 7 which has a 1 mA movement is housed in an aluminium case. This model is renowned for its reliability and robustness, the incorporation of a mechanically operated cut out linked to the meter movement and the two switch range selection system have endeared these meters to generations of radio and television engineers. Indeed many service manuals for radios include voltage values based on such a meter.

We also repair and service anything electronic and have been authorized by most leading manufacturers for many years. Bang & Olufsen, Teac, Nakamichi, Sony, Fostex, Panasonic, and most other manufacturers, amplifiers, turntables, tape decks. computers. name it, we can repair or renovate it going back to wind up gramaphones and projectors.
We also stock spares going back to the 1920's. Tubes, valves etc. 

ANY QUESTIONS PLEASE ASK AWAY.