FORESTAFF
Source: 567
Fore″staff′ (?), n. (Naut.) An instrument formerly used at sea for taking the altitudes of heavenly bodies, now superseded by the sextant; — called also cross-staff. Brande & C.
Source: 567
Fore″staff′ (?), n. (Naut.) An instrument formerly used at sea for taking the altitudes of heavenly bodies, now superseded by the sextant; — called also cross-staff. Brande & C.