A method of obtaining real-time data relating to a well construction activity, the method comprising the steps of: mounting a magnetic field generating device and fluid pressure pulse generating device to a tubing string; releasably coupling the tubing string to wellbore-lining tubing comprising at least one non-magnetic tubing section; running the wellbore-lining tubing and the devices into the wellbore using the tubing string; positioning the wellbore-lining tubing in the wellbore; releasing the tubing string from the wellbore-lining tubing; measuring at least one downhole parameter at a location external of the wellbore-lining tubing using at least one sensor associated with the non-magnetic tubing section; positioning the magnetic field generating device within the non-magnetic tubing section, further comprising anchoring the wellbore-lining tubing in the wellbore prior to releasing the tubing string activating the device to inductively couple the device to the at least one sensor 40; transmitting data relating to the at least one measured parameter through the non-magnetic tubing section to the magnetic field generating device by means of the inductive coupling; and transmitting the data retrieved from the at least one sensor 40 to surface using the fluid pressure pulse generating device associated with the magnetic field generating device, further comprising positioning the magnetic field generating device outside of the non-magnetic tubing section during run-into the wellbore; and, following release of the tubing string from the wellbore-lining tubing, translating the magnetic field generating device relative to the wellbore-lining tubing from the position outside the non-magnetic tubing section to the position within the non-magnetic tubing section. mounting a magnetic field generating device and fluid pressure pulse generating device to a tubing string; releasably coupling the tubing string to wellbore-lining tubing comprising at least one non-magnetic tubing section; running the wellbore-lining tubing and the devices into the wellbore using the tubing string; positioning the wellbore-lining tubing in the wellbore; releasing the tubing string from the wellbore-lining tubing; measuring at least one downhole parameter at a location external of the wellbore-lining tubing using at least one sensor associated with the non-magnetic tubing section; positioning the magnetic field generating device within the non-magnetic tubing section, further comprising anchoring the wellbore-lining tubing in the wellbore prior to releasing the tubing string activating the device to inductively couple the device to the at least one sensor 40; transmitting data relating to the at least one measured parameter through the non-magnetic tubing section to the magnetic field generating device by means of the inductive coupling; and transmitting the data retrieved from the at least one sensor 40 to surface using the fluid pressure pulse generating device associated with the magnetic field generating device, further comprising positioning the magnetic field generating device outside of the non-magnetic tubing section during run-into the wellbore; and, following release of the tubing string from the wellbore-lining tubing, translating the magnetic field generating device relative to the wellbore-lining tubing from the position outside the non-magnetic tubing section to the position within the non-magnetic tubing section.