16.011 Tapered Pencil

  • Johnston, Jon David (Vargas);Diagrams for Faceting v2 (1983) p55;
  • L/W=4.000
  • H/W=0.728
  • Vol/W^3=1.248
  • 58+11 Facets
  • Gear: 96
6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 <96> L L T T W W U U C C P P PC 16.011 Tapered Pencil Johnston, Jon David; Diag for Faceting, p55 Angles for R.I. = 1.540 58 facets + 11 girdles 1-fold, mirror-image symmetry; 96 index L/W = 3.990 T/W = 3.111 U/W = 0.531 P/W = 0.516 C/W = 0.173 Vol/W³ = 1.248 pc16011.asc