Found 1 items, similar to backsight.
English → English (gcide)
Definition: Backsight
Backsight
\Back"sight`\ (b[a^]k"s[imac]t`), n. [Back, adv. +
sight.] (Surv.)
The reading of the leveling staff in its unchanged position
when the leveling instrument has been taken to a new
position; a sight directed backwards to a station previously
occupied. Cf.
Foresight, n., 3.
[1913 Webster]