13.005 Tri Polar

  • Murphy, Merrill O;Lapidary Journal, Oct 1972, p1014;
  • L/W=1.000
  • H/W=0.820
  • Vol/W^3=0.303
  • 85+12 Facets
  • Gear: 96
8 16 24 32 40 48 56 64 72 80 88 <96> L L T T W W U U C C P P PC 13.005 Tri Polar Murphy, Merrill O: Lapidary J, Oct 72, p1014 Murphy, Merrill O: Off the Dop, Oct 88 Murphy, Merrill O: Transfer Bloc, V5n4p24 Angles for R.I. = 1.540 85 facets + 12 girdles 3-fold, mirror-image symmetry; 96 index L/W = 1.073 T/W = 0.386 U/W = 0.360 P/W = 0.537 C/W = 0.257 Vol/W³ = 0.303 pc13005.asc