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gyrograph
gyrograph n. 
/ˈdʒʌɪrə(ʊ)ɡraf/,
Brit. /ˈdʒʌɪrə(ʊ)ɡrɑːf/
, /ˈdʒʌɪrə(ʊ)ɡrɑːf//ˈdʒʌɪrə(ʊ)ɡraf/U.S. /ˈdʒaɪrəˌɡræf/
[Greek -γραϕος writing, recording] an instrument for recording revolutions./ˈdʒaɪrəˌɡræf/Π
1817 Edinb. Monthly Mag. 1 525 A Celestial Gyrograph..which gives the true bearings, rising, setting, and culminating, of forty of the principal fixed stars, for any hour and minute of the twenty-four hours.
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