Nautical instruments, namely, ship clocks in the nature of time clocks, ship barometers, ship hygrometers, ship thermometers, ship comfort meters in the nature of a combination of hygrometers and thermometers not for medical use, ship clinometers, ship clock systems in the nature of a system of time clocks having masterclocks and secondary clocks, ship weather stations in the nature of a combination of thermometers not for medical use, barometers and hygrometers, bell clocks in the nature of ...