Übersetzen...
Automatische Übersetzung:
Astronomical instruments: Tobias Mayer's reflecting circle of 1752 and Jean-Charles Borda's improved version of 1777. Copperplate engraving by Wilson Lowry after a drawing by J. Farey from Abraham Rees' Cyclopedia or Universal Dictionary of Arts, Sciences and Literature, Longman, Hurst, Rees, Orme and Brown, London, 1820.