e there is no electrical connec-tion between the line wires and the instrument save to thetwo primary fixed vanes, and as these are imbedded inthe base of the instrument; it would be impossible, no mat- INSTRUMENTS. 11; ter how badly the instrument was out of order, for a shortcircuit to occur… … connections. Here there are three fixed segments corre-sponding to the quadrants of previous instruments, andthree aluminum movable vanes, with pointers attached, ar-ranged as shown. Light counterweights are used to holdthe pointers normally at the zeros. Each of the fixed seg-ments is connected to…
Electronics · Electricity
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