On the basis of a recent generalization of the Maker fringes theory, we hav
e implemented an alternative use of the fringes aimed at disclosing the die
lectric orientation of obliquely cut planks. The method (model transfer fun
ction, experimental layout, fitting) is outlined and its consistency is dem
onstrated. Some simulations for wide gap organic crystals are presented. (C
) 2000 Elsevier Science S.A. All rights reserved.