FileFlip · Surface Scale Transform

1 Load surface

Drop a LandXML (.xml) here

or tap to browse · stays on this machine

2 Factor

Datum adjustment factor (ground → grid, e.g. 1.00072) Combined scale factor (k) Pivot / base point (E0, N0) — scale about this point

Leave 0, 0 to scale about the origin (MicroStation "About Zero Origin"). Set to your project base point / control monument if the ground coordinates were established about that point — that removes the small lay-in shift.

Direction

Apply = ground → grid (shrinks toward State Plane). Remove = grid → ground (the inverse).

Also scale elevations (Z). Leave OFF for a true combined factor — it's a horizontal correction. Bentley's "about Zero Origin" touches Z; a script lets you not.

Pivot: scale is taken about the base point E0, N0 above (default 0, 0, 0 = MicroStation "About Zero Origin"). Set E0, N0 to your control point/monument to scale about it. The triangulation is never altered — only the node coordinates move.

3 Sanity check — see it before you trust it

Load a surface and hit Flip it. You'll see the before/after the instant it runs — no waiting 12 steps to find out it didn't take.