The Compass Plate is made of weathering steel (corten steel) and installed with screws on solid material like wood, metal or stone. The screws are included in the product package.
Weathering steel, best-known under the trademark COR-TEN steel and sometimes written without the hyphen as “Corten steel”, is a group of steelalloys which were developed to eliminate the need for painting, and form a stable rust-like appearance if exposed to the weather for several years. (Source: Wikipedia)
The Compass Plate has the size of a DVD.
Size: 12 cm diameter
Thickness: 3 mm
Weight: 250 g