An awl is a tool for piercing small holes in leather or wood, consisting of a sharp needle mounted in a wooden handle. It’s a period charge, found in the rebus badge of John Alcock, Bishop of Ely (d.1500) [Siddons II.2 331]. The awl’s handle varied in form: the illustration is taken from the Hausbuch der Mendelschen, c.1531 [Amman xli].
Rudger Nadel bears: Argent, three awls points to chief sable.
Kendrick MacBain bears: Per bend sinister Or and vert, a wooden stick shuttle bendwise sinister proper and an awl bendwise sinister point to base argent.
Wystan Haldane bears: Quarterly Or and azure, an awl, point to base, and a mallet in saltire counterchanged.