Improvements in the methods now in use for taking the longitude of a ship at sea. Invented and described by Samuel Dunn,...
Dunn, Samuel,-1794.
[London] : Printed for the author, no. 1 Boar's-Head Court, Fleet-Street,
1793.
Horizontal chain lines.
Sig B4v (p.16) has the word 'End' at the foot, and D1r (unpaginated, but presumably intended to form p.25) has an imprint at the foot: 'Printed for the author. M.DCC.XCII.' - The last page ends: 'Here ends sheet II. supplementary.'.
Without gathering C.
ESTC