This image is of a ( main shape) small sideways rectangle shape with a small square in the center and two very small vertical rectangles on the inside lower half of the main shape. There is also a teardrop shape in the very center of the icon.
This Glucometer 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.