basic CFD boundary layer meshes can quite easily reach lc*1e-6 between points;...

basic CFD boundary layer meshes can quite easily reach lc*1e-6 between points; let's go down to 1e-8 (same tol as intial Delaunay)...

Common/DefaultOptions.h

@@ -892,7 +892,7 @@ StringXNumber GeometryOptions_Number[] = {
 
   { F|O, "Tangents" , opt_geometry_tangents , 0. ,
     "Display size of tangent vectors (in pixels)" },
-  { F|O, "Tolerance" , opt_geometry_tolerance, 1.e-6 ,
+  { F|O, "Tolerance" , opt_geometry_tolerance, 1.e-8 ,
     "Geometrical tolerance" },
   { F,   "Transform" , opt_geometry_transform , 0. ,
     "Transform model display coordinates (0=no, 1=scale)" },