This is a drawing of some sort of tool or object. On the top right there is a U-shaped that appears to be able to connect but it's not all the way connected and at the bottom left is the base.
This Micrometer 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 6,000 icons, all in the same style and quality.