State Plane Coordinate System State Plane Coordinate System The State Plane Coordinate System (SPS or SPCS) is a set of 124 geographic zones or coordinate systems designed for specific regions of the United States. Each state contains one or more state plane zones, the boundaries of which usually follow county lines. There are 110 zones in the contiguous US, with 10 more in Alaska, 5 in Hawaii, and one for Puerto Rico and US Virgin Islands. The system is widely used for geographic data by state and local governments. Its popularity is due to at least two factors. First, it uses a simple Cartesian
Moulding plane Moulding plane In woodworking, a moulding plane (molding plane in US spelling) is a specialised plane used for making the complex shapes found in wooden mouldings. Traditionally, moulding planes were blocks of wear resistant hardwood, often beech or maple, which were worked to the shape of the intended moulding. The blade, or iron was likewise formed to the intended moulding profile and secured in the body of the plane with a wooden wedge. A traditional cabinetmakers shop might have many, perhaps hundreds, of moulding planes for the full range of work to be performed. The late nineteenth century brought modern