M TEKPRO Engineering Pvt. Ltd. Offers Interfacial Tensiometer with Large LCD Display. M TEKPRO Engineering Pvt. Ltd. Supplies a range of High Voltage Testing & Measuring equipments that provide applications in the field of Generation, Transmission and Distribution of electrical power. The Interfacial Tensiometer with Large LCD Display of model number SIGMA2000 is designed to measure the surface tension of liquids.