Demonstration instruments for measuring inserts

With a special addition, the analogue instrument can be turned into a digital instrument with simultaneous analogue display. In order to extend the measurement possibilities, there are also measurements for power and voltage amplification. The replaceable measuring areas are slid into a slot on the top of the instrument ('toaster principle').

The operation can be performed by hand. Special measurements eg for Resistance and Lux is inserted horizontally from the back. All switches are done automatically via a 16-pin connection list. Most measuring ranges are passive and are therefore independent of batteries or network connection.

The scales are large and clear with fingering and completely linear dividing even for alternating current. Reading can also be done from the back because the scales are double-sided and have a gap. Zero adjustment of the pointer is performed mechanically with thumbwheel on the underside of the instrument. The instrument is equipped with extensive overload protection through diodes, cold conductors and fuses. In addition, the active measuring areas are electronically protected.