Measurement device for e.g. wristwatch, has indicator units comprising respective left and right retrograde hands on both sides of concentric pivoting axles, where retrograde hands are cooperated with parts of graduation, respectively

摘要

#CMT# #/CMT# The device has a movable retrograde indicator units associated to a circular arc graduation (10') representing dates. The indicator units comprise respective left and right retrograde hands (11, 12) on both sides of concentric pivoting axles (5). The retrograde hands are cooperated with parts of the graduation, respectively. Each of the hands occupy a neutral position when the other hand indicates a value on the corresponding part of the graduation. The graduation is carried by a transparent display zone (10) of a dial (1) of a timepiece e.g. wristwatch. #CMT#USE : #/CMT# Measurement device for a timepiece (claimed) e.g. retrograde date display timepiece such as wristwatch. #CMT#ADVANTAGE : #/CMT# The retrograde hands are cooperated with parts of the graduation, respectively, thus displaying the date in the form of big character, on a long radius sector, irrespective of the presence of the concentric pivoting axles of hour and minute hands in an angular sector. The configuration of the device allows a retrograde hand driving mechanism to be modified such that the dates are indicated by one of the retrograde hands. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a top view of a retrograde date display timepiece indicating a seventh day of a month. 1 : Dial 5 : Concentric pivoting axles 10 : Transparent display zone 10' : Circular arc graduation 11 : Left retrograde hand 12 : Right retrograde hand.