'Stadia wires' definitions:

Definition of 'Stadia wires'

From: GCIDE
  • Stadia hairs \Sta"di*a hairs\ or Stadia wires \Sta"di*a wires\ (st[=a]"d[i^]*[.a] h[^a]rz). (Surv.) In a theodolite, etc., horizontal cross wires or hairs equidistant from the central horizontal cross wire. [Webster 1913 Suppl.]