Chronograph and zeroing device for the minute hand of a chronograph

A chronograph (100), comprising:

• a second wheel (3) having an entraining spring (5),
• a pulse-receiving wheel (6), wherein the entraining spring (5) is configured for engaging in the pulse-receiving wheel (6),
• a zeroing wheel (8), wherein the zeroing wheel (8) is in constant engagement with the drive wheel (7),
• a pulse-transmitting wheel (9),
• a minute wheel (10), wherein the minute wheel (10) is in constant engagement with the pulse-transmitting wheel (9), and a center minute hand (2) is firmly connected to the minute wheel (10),
• a second shaft (4), wherein the second wheel (3) and a center second hand (1) are firmly connected to the second shaft (4),
• a multifunction shaft (18), which is aligned parallel to the second shaft (4), wherein the pulse-receiving wheel (6) and the pulse-transmitting wheel (9) are firmly coaxially connected to the multifunction shaft (18);
• a first zeroing unit (71), which consists of a zeroing lever (12) having a zeroing lever arm (12a) and a zeroing lever latch (12b), wherein the zeroing lever latch (12b) comprises a first end (13) and a second end (14) and wherein the first end (13) can be brought into and out of an operative connection with a minute zeroing heart cam (17) of the zeroing wheel (8) and the second end (14) can be brought into and out of an operative connection with a second zeroing heart cam (16) of the second wheel (3);
• characterized in that
• a second zeroing unit (72) is arranged above the first zeroing unit (71) in such a manner that the second zeroing unit (72) supports the first zeroing unit (71) when the reset pushbutton (104) is operated.