Working from Haryana in India, we - S. V. Engineering Centre are well known company offering reliable calibration services. These are provided for Laser Interferometer and Coordinate Measuring Machine (CMM). We use various machines, and equipment to test the optimal or highest performance level of the above mentioned products. For example, for the interferometer, we can test its caliber for optimum values of laser frequency accuracy, linear measurement accuracy and warm-up time. Similarly, in our calibration services for CMM, we consider the parameters of angles, concentricity, length standards. perpendicularity, radius and straightness.