CROSS-STAFF
Source: 567
Cross″–staff′ (–st?f′), n. 1. 1. An instrument formerly used at sea for taking the altitudes of celestial bodies.
2. 2. A surveyor's instrument for measuring offsets.
Source: 567
Cross″–staff′ (–st?f′), n. 1. 1. An instrument formerly used at sea for taking the altitudes of celestial bodies.
2. 2. A surveyor's instrument for measuring offsets.