cross-staff
n. நில அளவையாளர் குறுக்கு மட்டக்கோல்.
Cross"-staff` (-stf`), n. 1. An instrument formerly used at sea for taking the altitudes of celestial bodies. 2. A surveyor's instrument for measuring offsets.
n. நில அளவையாளர் குறுக்கு மட்டக்கோல்.
Cross"-staff` (-stf`), n. 1. An instrument formerly used at sea for taking the altitudes of celestial bodies. 2. A surveyor's instrument for measuring offsets.