The levels can not only be used to locate the photo frame, but also help to measure the levels, draw lines accurately and measure the length. Electrician Levels Instrument With Double Bubble Vials & Sliding Indicators Suitable For Electrical Installations Crafted from high-quality material, this 40cm measuring tool integrates positioning scale and double view graduations. Professional electricians, home renovators, and enthusiasts appreciate and multiple scale functionality for wall mounted installations. Ideal for aligning switches box during construction projects or ensuring picture perfects placement in residential space requiring millimeter levels accuracy., Weight: 0.67130758779 pounds, Manufacturer: Tuidzljd