Transmissometer. A device for measuring transmission or beam attenuation, sometimes as a measure of turbidity. A narrow, collimated beam of light shines ...
www.hobilabs.com/cms/index.cfm/ 37/1288/1301/1493/3234.htm


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Note added at 13 mins (2006-04-01 11:00:54 GMT)
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Transmissometer Controlled Sampler. Click to enlarge, <BACK> to return. Sampler and transmissometer combined. General Description ...
www.challengeroceanic.com/samplingsystems/ filtration/
transmissometer.htm

Transmissometer is a part of an integrated optical profiler, consisting of transmissometer, fluorometer, temperature and pressure gauges. ...
www.iopan.gda.pl/~sagan/bdo/ap_c660.htm