Viscosity of an oil is defined as its resistance to flow and Viscometer measures the flow. Monitoring viscosity is one of the most important components of any oil analysis program. Minute changes in viscosity at operating temperatures can be magnified to the extent that an oil is no longer able to provide adequate lubrication and efficiency in preventing friction between moving parts. - Automatic nonlinear curve temperature control, can be edited and drew in real-time according to requirements. Calculate and print borderline pumping temperature of Gas barrier type and flow limited type; Equipped with newly developed defrost system.