The action of the stack alignment checking circuitry (36) is independent of any further other alignment checking performed in respect of all memory accesses.

The present invention concerns an apparatus for controlling the alignment of rotating shafts and a calibration and control procedure.

The alignment check includes compensation for thermal growth (62) and dynamic movement (63), as appropriate.

Have an alignment check done, and a full alignment performed if necessary.

Tracking control is performed so that the second laser beam is applied to the guide track.

The film (21) is applied with a system using registration control based on two sources of input data, registration indicia (154) and cutter (51) position.

A device is provided for controlling the alignment of two optical paths, one of which is a laser sighting path and the other an infrared imaging path.

Uneven tyre wear is another indicator of the need for an alignment check.

Thus, general alignment checking circuitry (38) may be provided and independently selectively disabled in respect of any memory access.

The alignment unit associated with each processor monitors the instruction stream to detect a request for alignment.

The action of the stack alignment checking circuitry (36) is independent of any further other alignment checking performed in respect of all memory accesses.

The translation device is operable to cause translational movement, transverse to the alignment movement, of the alignment device with the holder towards the probe card.

The present invention concerns an apparatus for controlling the alignment of rotating shafts and a calibration and control procedure.

A system includes a control point information generator and an alignment generator (17).

The clocks of the monitoring devices can also be synchronized at the same point of alignment.