Articulating device

A method of moving an articulating mechanism for a measuring device comprising:

• (a) releasing two bodies which form the articulating mechanism allowing relative movement thereof;
• (b) moving one of the two bodies with respect to the other until a position adjacent a desired position is reached;
• (c) moving one of the two bodies with respect to the other from the position adjacent to the desired position to the desired position whereby said movement occurs under particular conditions;
• and
• (d) re-constraining the two bodies so they are relatively fixed.

A method of positioning an articulating mechanism for a measuring device which is controlled by a potentiometer comprising:

• moving the articulating mechanism to a position under particular conditions;
• recording a signal indicative of that position;
• and
• repeating for other positions;
• characterised in that, during a subsequent, movement to the position carried out under the same particular conditions, a signal indicative of the position is obtained, compared with the recorded signal and the articulating mechanism is moved until the indicative signal corresponds to the recorded signal.

A measuring device comprising:

• an articulating mechanisms having two relatively moveable bodies;
• and
• a controller which includes a comparator for comparing current device position with a desired position, characterised in that
• the comparator is instructed to allow the articulating mechanism to move to the desired position under particular conditions.