Yes, the procedure will work if the instrument is taken to Nepal, as the current at a place can be calculated by multiplying the reduction factor K with tan θ of that place . In our case, we will take the value of tan θ of Nepal, as tan θ may vary from place to place. tan θ at any place is determined from the mathematical formula BH​B​, where B is the external magnetic field and BH​ is the horizontal component of Earth's magnetic field Thus, we need not take the manual or the instrument back to the factory for correction.