WETLabs C-Star transmissometer WetLabs transmissometer An underwater optical beam transmissometer capable of free-space measurements or mounting in a flow tube with a pump for underway or moored applications. It is available in 370, 470, 530 and 660 nm wavelengths with a path length of 10 or 25 cm. 2010-05-18 16:10:58.0 SDN:L22::TOOL0160 SDN:L22::TOOL0160 SDN:L22::TOOL0160 1 1 2010-05-18 16:10:58.0 accepted false