Gloster Survey
... that the Gloster Survey, a 1920s British photo-survey biplane, had only two prototype models made before production was discontinued?
... that the <b id="mwGN8"><a href="./Gloster_Survey" id="mwGOA" rel="mw:WikiLink" title="Gloster Survey">Gloster Survey</a></b>, a 1920s <a href="./British_people" id="mwGOE" rel="mw:WikiLink" title="British people">British</a> photo-survey <a href="./Biplane" id="mwGOI" rel="mw:WikiLink" title="Biplane">biplane</a>,  had only two <a href="./Prototype" id="mwGOM" rel="mw:WikiLink" title="Prototype">prototype</a> models made before production was discontinued?