[Shipping]

An Explanation of the Adjustment of Ships' Compasses. Captain Wentworth Chetwynd, third edition, London, J.D. Potter, 1914. 25,12 pp. + Bruxelles 1910. Exposition Collective Allemande d'Instruments de Précision et d'Optique. 143 pp. Cloth. Light dampstaining bottom first part of book, else good copy + G.E.C. Firelli. General Ship Wiring Cables, 1939. 340 pp. - and 3 more.

(total 6)