Here are links to the variac and LCD display used in this video:
500V 5A Variac - http://amzn.to/2qGFCXe
Digital LCD Voltmeter Ammeter: http://amzn.to/2pct7kd
Pimpin' ain't easy, but pimpin' your variac only takes about 10 minutes. In this vid, we'll take our inexpensive Chinese Variac Variable Transformer and add a combination 4-in-1 LCD voltmeter, ammeter (to measure current in amps), power meter (measured in Wh and kWh), and watt meter display. If you want a cheap way to get into a variac with a nicer display, this might be your ticket.