. . . . "British National Physical Laboratory" . . . . . . . "National Physical Laboratory, Teddington" . . . . . . . . . . . "National Physical Laboratory" . . . . . . . . . "National Physical Laboratory (United Kingdom)" . . "Chemical Research Laboratory" . . . . . "NPL" . "Scrapbook" . "National Physics Laboratory" . "the National Physical Laboratory" . . "National Physical Laboratory)" . "National Physical Laboratory (United Kingdom)" . . . . . . . . . . . . "NPL Teddington" . . . . . . . . . "National Physical Laboratory, UK (NPL)" . . "National Physical Laboratory (NPL)" . . . . . . . . . . "National Physical Laboratory's" . "UK National Physical Laboratory" . . . . . . . . . . . . . . . . .