The Georgia Tech Veeco Dektak 150 is a surface profilometer (by stylus contact) capable of down to 4 angstrom step height measurement. This profilometer is comparable to the Tencor P15 Profilometers in performance and operation. Specifications: -1mm max step height -automated X and Y stage -up to 6" (150mm) wafer -stylus force down to 0.5 mg