A method of locating an assembly point (P) on a first part (40), at which
assembly point the first part is to be joined to a second part (1), the
method comprising the steps of: determining an assembly location (1a,
1b, 1c, 1d) in respect of the second part;
measuring a portion (42a, 42b, 42c) of
a surface (43) of the first part, the surface being spaced away from the
second part, so as to define the position and orientation of the surface; and,
calculating the assembly point on the surface of the first part, where the surface
of the first part is intersected by a vector (N) passing between the determined
assembly location and the surface of the first part.
