The Federal Globe provides high performing, precision optics while maintaining the timeless look of a traditional acorn form. The Small Federal Globe is available with a choice of three different optical systems, including the patented Moldcast ContraCline, internal and external refractors or bare lamp systems. Available in two traditional day forms including a flowing decorative leaf design, and a more traditional form featuring crisp lines and vertical ribs. Available in two sizes, the Federal Globe is ideal for multiple mounting heights.. New TIR Optical System with improved performance and efficiency is now offered in both large and small scales.