Centralign Ultra aligns steam and gas turbine internal elements with upper halves installed or off, for distances up to 133 ft. Accurate bore measurements can be acquired without interrupting other work taking place in turbine, saving time over methods like piano wires, micrometers and optical instruments. System assures true bore center measurement and reveals bore out of roundness. Stable wireless data transmission allows complete data transfer of information between measuring sensors and computer. Brackets can be installed in magnetic or non-magnetic bores, and tops-on or tops-off configurations, with bore diameters from 4.75 in. to 166.5 in.