Waters [India] Pvt Ltd manufactures Rheometer with Ultra-low Inertia Drag Cup Motor. Waters [India] Pvt Ltd is an ISO 9001 certified company. The Rheometer with Ultra-low Inertia Drag Cup Motor, Model AR 2000 EX, is designed specifically to provide superior controlled stress, controlled rate, step-strain and direct oscillation strain control. The Rheometer with Ultra-low Inertia Drag Cup Motor measures angular deflection and speed using a low inertia and high-resolution optical encoder. This Rheometer accurately measure high and low angular velocities.