Length-measuring device

A length-measuring device, comprising:

• a carrier extending longitudinally in a measurement direction, a scale having a measuring graduation being disposed on the carrier;
• a scanning carriage configured to scan the measuring graduation, the scanning carriage being guided longitudinally in the measurement direction on at least one guide surface;
• a coupling which couples the scanning carriage to a drive dog rigidly in the measurement direction and resiliently transversely to the measurement direction, the coupling including a connecting element which extends in the measurement direction and is rotatably mounted to the scanning carriage at a first pivot joint and to the drive dog at a second pivot joint spaced apart from the first pivot joint in the measurement direction;
• a first spring disposed between the connecting element and the drive dog, the first spring exerting a pressure force on the scanning carriage at a first position so as to press the scanning carriage against the at least one guide surface;
• and
• a second spring disposed between the connecting element and the scanning carriage, the second spring being spaced apart from the first spring in the measurement direction and exerting a pressure force on the scanning carriage at a second position spaced apart from the first position in the measurement direction so as to press the scanning carriage against the at least one guide surface.