10PCS Precision Round Bubble Level Mini Spirit Level DIY Measuring Tool Kit (20x9mm) - size: 20x9mm

About this item

• The bubble inside the circle will tell that the tested surface is in water level as the bubble in the exactly middle of the circle.
• The surface of the tested materials can be adjusted to the water level as the bubble shows.
• Test level method: you need to find a completely horizontal plane, and then put the product on the plane to test. You can know.if the product is accurate.If side of the product is not level, you can flip the other side at 90 degrees to test.
• Material: acrylic and plastic
• Package Contents: 10PCS Bubble Level