Usage examples for D2

  1. C1 Builder Motion Driving Sprocket Gear, 8 T. D Front Roll Twist Gear, 84 T. D1 Front Roll Draft Gear, 21 and 27 T. D2 Front Roll, usually 1 in. – Illustrated Catalogue of Cotton Machinery by Howard & Bullough American Machine Company, Ltd.
  2. 7, 8. These redactions are known to criticism as D and D2 respectively. – Introduction to the Old Testament by John Edgar McFadyen