There are two lines. They are horizontal. They are parallel. The lines are twice the distance long that they are far apart. The lines are the same width as the line for an underscore.
This Equal Sign icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 5,700 icons, all in the same style and quality.