Polarization results for NGC 660 at C-band and 12″ HPBW, corresponding to 720 pc. The contour levels (TP) are 70, 210, and 350 μJy beam⁻¹. The image of the TP map is cut at 10 000 μJy beam⁻¹ in order to highlight the disk emission. The six panels show total intensity (TP, Stokes I) with contours at 5, 15, 25 σ rms and intrinsic polarization vectors (upper left, panel 1), PI with intrinsic polarization vectors, and the contours of TP as given in panel 1 (upper right, panel 2), percentage polarization (referred to as Perc) with TP contours of panel 1 (mid left, panel 3), RM with TP contours of panel 1 (mid right, panel 4), errors in RM with TP contours of panel 1 (lower left, panel 5), RM with intrinsic polarization vectors and TP contours of panel 1 (lower right, panel 6).