A micromechanical device for detecting angular velocity comprising four open drive frames configured to form four pairs of adjacent open drive frames and four detection masses for detecting angular velocity about an axis perpendicular to a plane of the micromechanical device, wherein the plane is formed by structural elements of the device when not excited to any motion, the micromechanical device further comprising: - a coupling frame system (110, 111, 120, 121, 112, 122) coupled to the four open drive frames, wherein the coupling frame system is configured to force the open drive frames to be driven into a synchronized anti-phase driving motion, - first springs coupling each one of the four detection masses to a respective one of the four open drive frames, the first springs being configured to relay an essentially linear driving motion of each open drive frame to the detection mass coupled to it, and - an inner coupling lever system (115, 128) configured to force the four detection masses into a synchronized anti-phase detection motion, wherein the detection motion of each of the four detection masses is essentially linear, and wherein the four detection masses are configured to double differentially detect angular velocity about said axis, wherein the inner coupling lever system (115, 128) comprises: - two coupling levers, each coupling lever capable of rotating motion in the plane of the device; - two first bending springs, each first bending spring coupling one of the two coupling levers to at least one suspension structure; and - a central spring mutually coupling the two coupling levers with each other, wherein each one of the two coupling levers comprises a first beam and a second beam, and wherein - a first end of the first beam is attached to a first side of the second beam at half-way of the length of the second beam, - a second end of the first beam is coupled to the central spring mutually coupling the two coupling levers, and - each end of the second beam is coupled to a respective detection mass with at least one fourth spring, wherein the second beam is coupled via one of the first bending springs to a suspension point at half-way of the length of the second beam, on the side of the second beam that is opposite to the side attached to the first beam, wherein the first bending springs and the central spring are aligned with a symmetry line common to both two coupling levers when the device is in rest and in driving motion, and wherein each end of the second beam of each of the two coupling levers is coupled to at least one detection spring patterned in an enclosure within the respective detection mass, and the other end of the at least one detection spring is coupled to a third suspension structure. - a coupling frame system (110, 111, 120, 121, 112, 122) coupled to the four open drive frames, wherein the coupling frame system is configured to force the open drive frames to be driven into a synchronized anti-phase driving motion, - first springs coupling each one of the four detection masses to a respective one of the four open drive frames, the first springs being configured to relay an essentially linear driving motion of each open drive frame to the detection mass coupled to it, and - an inner coupling lever system (115, 128) configured to force the four detection masses into a synchronized anti-phase detection motion, wherein the detection motion of each of the four detection masses is essentially linear, and wherein the four detection masses are configured to double differentially detect angular velocity about said axis, wherein the inner coupling lever system (115, 128) comprises: - two coupling levers, each coupling lever capable of rotating motion in the plane of the device; - two first bending springs, each first bending spring coupling one of the two coupling levers to at least one suspension structure; and - a central spring mutually coupling the two coupling levers with each other, - a first end of the first beam is attached to a first side of the second beam at half-way of the length of the second beam, - a second end of the first beam is coupled to the central spring mutually coupling the two coupling levers, and - each end of the second beam is coupled to a respective detection mass with at least one fourth spring,