Its sliding measurement markers adapt to international electrical standards, while the streamlined profile fit seamlessly in toolkit for on site convenience Ideal for aligning switches box during construction projects or ensuring picture perfects placement in residential space requiring millimeter levels accuracy Professional electricians, home renovators, and DIYer enthusiasts will appreciate and multiple scale functionality for wall mounted installations Crafted from lightweight aluminum, this 40cm measuring tool integrates positioning scale and double view graduations 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, Manufacturer: APGLSXY