| <?xml version="1.0" encoding="UTF-8"?> |
| <!-- originate: https://commons.wikimedia.org/wiki/File:Variable_Resistor.svg --> |
| <svg xmlns="http://www.w3.org/2000/svg" |
| version="1.1" baseProfile="full" |
| width="70px" height="40px" viewBox="0 0 700 400"> |
| <line x1="0" y1="200" x2="700" y2="200" stroke="black" stroke-width="20px"/> |
| <rect x="100" y="100" width="500" height="200" fill="white" stroke="black" stroke-width="20px"/> |
| <line x1="180" y1="370" x2="500" y2="50" stroke="black" stroke-width="15px"/> |
| <polygon points="585 0 525 25 585 50" transform="rotate(135 525 25)"/> |
| </svg> |