1.Material: Aluminum 2.Size:6''/12'' 3.Graduation: die-casting. 4.Usage:Measure vertical level degree. 1. Heavy duty cast aluminum is durable and lightweight.2. Machined edges for accuracy.3. High reliability, long life excellentmoistureproof and cauterization4. Aluminum Square in the world enjoy the markets, such as North America, South America, Europe, Southeast Asia, Africa, Middle East, East ...