Originally Posted by tcpip95
What does it say on the white tape? Looks like the word "no" or "not" and something else...
Looks like a couple of beefy wires have simply been cut off, with just a couple of smaller gauge wires remaining.
is that a fixed position (i.e. On/off) or a variable potentiometer?
It's a variable potentiometer. The label you see is upside down and reads 110V; no other labels or identifiers.
Below is a better shot. The two smaller wires definitely feed the hertz meter. (The gray wire is a neutral for a control box in the salon that has a cable feeding some long-removed device on the radar arch. It, and every abandoned wire I find, is coming out.)
It's been suggested by a knowledgeable electrician whose seen the photos that the little green box is an interface to convert signals for the old analog gauges. In any event, it's out and I'm still thinking I can live without it since the analog AC meters are being replaced with a single digital multimeter.