Equipment as follows: a. Balancing machines having all the following characteristics: 1. Not capable of balancing rotors/assemblies having a mass greater than 3 kg; 2. Capable of balancing rotors/assemblies at speeds greater than 12,500 rpm; 3. Capable of correcting unbalance in two planes or more; and 4. Capable of balancing to a residual specific unbalance of 0.2 g mm per kg of rotor mass; b. Indicator heads (sometimes known as balancing instrumentation) designed or modified for use with machines specified in 9.B.2.a.; c. Motion simulators/rate tables (equipment capable of simulating motion) having all of the following characteristics: 1. Two axes or more; 2. Designed or modified to incorporate sliprings or integrated non-contact devices capable of transferring electrical power, signal information, or both; and 3. Having any of the following characteristics: a. For any single axis having all of the following: 1. Capable of rates of 400 degrees/s or more, or 30 degrees/s or less; and 2. A rate resolution equal to or less than 6 degrees/s and an accuracy equal to or less than 0.6 degrees/s; b. Having a worst-case rate stability equal to or better (less) than plus or minus 0.05% averaged over 10 degrees or more; or c. A positioning “accuracy” equal to or less (better) than 5 arc second; d. Positioning tables (equipment capable of precise rotary positioning in any axes) having the following characteristics: 1. Two axes or more; and 2. A positioning “accuracy” equal to or less (better) than 5 arc second; e. Centrifuges capable of imparting accelerations above 100 g and designed or modified to incorporate sliprings or integrated non-contact devices capable of transferring electrical power, signal information, or both.