TIMEPIECE TESTING DEVICE

A device (100) for testing a timepiece, including a case (1) receiving calottes (200) or watch heads (300), each calotte (200) enclosing a movement (400) and its projecting control member. The case (1) includes, removable and stackable on top of one another, a back, a frame (90) including at least one measuring support (500) forming a lower support for a calotte (200) or watch head (300), and an upper portion including a cover (10) with a locking element (16) for compressing an upper resilient element (80, 83) and holding each calotte (200) and/or each watch head (300). Each measuring support (500) is supported by a sole made of a resilient material (921) and carries an internal running sensor (510). Each movement (400) of the case (1) is phonically isolated from the other movements (400) by other resilient elements in the case (1).