DIY Lab Bench Power Supply

For future projects I will need a lab bench power supply so I turned a computer power source bought from the flea market into a laboratory source with a very low investment!
Parts:
Used PC Power Supply: $3.5
On/Off Rocker Switch: s.click.aliexpr...
Panel Voltmeter: s.click.aliexpr...
Rotary Switch: s.click.aliexpr...