Labtron manufactures the Rotational Viscometer, a bench-top instrument designed for viscosity measurement in oil, paint, food, adhesive, plastic, and pharmaceutical testing applications. It measures viscosity from 10 to 100,000 mPa.s using four interchangeable rotors operating at 6, 12, 30, and 60 r/min. The dial-based interface supports routine fluid consistency evaluation. With a measuring error of ±5% for Newtonian fluids, it is suitable for quality control, research, and laboratory viscosity testing workflows.