. . . . . . . . "SDN:S04::S0432" . "1m path length red light transmissometer"@en . "false" . "SDN:S04::S0432" . "1" . . "2006-10-02 18:26:59.0" . "1" . . "SDN:S04::S0432" . "accepted"@en . "An instrument that emits red (usually 660nm wavelength) light and measures how much of it reaches a receptor accurately located 1 m away from the transmitter."@en . "" . . "2006-10-02 18:26:59.0" . . . . .