Avo multimeter model 71


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There are four thick film resistor circuits housing the majority of the resistors which form the universal shunt, voltage dividers etc

model71

Three of the thick film circuits are on the underside of the printed circuit board


The versatile moulding for the meter and batteries has holes for additional sockets so that it can be used for the other meters in the range. This model was soon superseded by the more accurate and virtually identical model 72. The 1A fuse was omitted in the Model 72.

You will find more information here about these instruments and other similar models. AVO produced a range of the smaller multimeters such as this which are described here  

 

AVO produced the "70 series" range of analogue pocket meters with 2000 Ohms/Volt sensitivity and 3 inch scale lengths at the beginning of the 1970's. The following is from a 1972/3 trade catalogue.   

 


For further information have a look at my pages on similar AVOmeters here