We have measured the dielectric constants of 6CHBT. The results of the studies for different alignment and thicknesses under different electric measuring fields and magnetic fields are presented. We discuss how dielectric properties depend on boundary condition, thicknesses of the samples, and magnitudes of electric and magnetic fields. The obtained experimental results and the discussion in the terms of continuum theory make it possible to compute the diamagnetic anisotropy ((Delta) (Chi)), splay and bend elastic constants (K11, K33) of 6CHBT.© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.