. . "0"^^ . . . "0"^^ . "103114614"@en-us . . . . . . "103778808"@en-us . . . . . "photometer"@en-us . "03926876-n"^^ . "103926876"^^ . "measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source"@en-us . . . . . . . "photometer"^^ . . "measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source"@en-us . . . . . .