Do you need an Autoformer?

We have our 30 Amp Autoformer about six years. It is an important tool for maintaining our electrical systems. We monitor our electrical service with a plug in  Volt meter inside our fifthwheel.  Using these tools you  KNOW what kind of electrical service you have.

They are on sale at CW plus they have $1.00 shipping. Here is a link  autoformer.  We bought ours after having damage to our Air Conditioner due to low voltage.