Massey's patent ships' log
1854-1857
Edward Massey-patented sounding machine
Bracket to suspend register, for deck log and speed gauge
1876-1906
Rotator for deck log
1876-1906
Edward Massey-patented sounding machine
Speed gauge with register
1876-1906
Additional register
1876-1906
Deck log and speed gauge
1876-1906