Is a chronometer similar to a chronograph?

No. A chronograph watch has multiple functions for measuring time, and a chronometer is a certification of accuracy. A chronometer timepiece(Rolex replica,Porsche Design replica,Richard Mille replica,Zenith replica,Hublot replica and Ferrari replica watches)has been tested for accuracy by a Swiss laboratory, the Controle Officiel Suisse des Chronometres [COSC]. Timepieces qualifying as chronometers are accurate to 5 seconds per day and include a COSC certification number.