This demonstration meter is specially designed to teach the constructional features of the permanent magnet moving coil type. The movement is fitted in a transparent wooden box, and internal electrical connections are made visible for instructional purposes. The meter can be used for both demonstration and actual measurements. The instrument has an accuracy class of 2.5 and a scale length of 110 plus or minus 2 mm. Overall size is approximately 80 x 100 x 190 mm.