Product Note: Also called a sight level, the SECO 2x Hand Level Internal Vial is a heavy-duty model that extends to 7 inches (178mm) from its 5 inch (127mm) length. Its vial is enclosed and in a highly visible neon yellow vial for easy reading. With a 2x magnification, this level is excellent for preliminary surveying work, landscaping, bricklaying, excavations, fence installation, and more.