A method and apparatus for controlling a turbo-machine in case of failure of the main burn fuel flow calculator. The discontinuous adhesive coating preferably includes a thermoplastic resin. In another embodiment, the proper termination is set or measured by adjusting the termination value to achieve maximum power dissipation in the terminating device. With the aforesaid apparatus, the object can be positioned and monitored in a remote manner no matter it is being shielded or not. The recommended items may be displayed together with an option to individually deselect the recently viewed items on which the recommendations are based. The spacing arrangement being arranged such that as a rotor blade 26 of a compressor 13 rotates, the rotor disc 28 will move outwards and forwards to maintain a substantially constant gap 36 between the rotor blade 26 and an inclined casing 20.