An apparatus for angular acceleration detection, comprising: a proof mass having an outer edge bounding a first area, an inner edge disposed within the first area and bounding a second area smaller than the first area, and a center disposed within the second area, wherein the outer and inner edges and the center are disposed in a plane; a substrate and an anchor coupled to the substrate, wherein the anchor is connected to the center; and a plurality of tethers coupling the inner edge of the proof mass to the center, wherein at least one of the plurality of tethers is symmetric with respect to a symmetry axis that lies in the plane and that passes through the center of the proof mass, the at least one tether of the plurality of tethers comprising: a first beam directly attached to the inner edge of the proof mass at one end and extending inwardly along the symmetry axis toward the center; a second beam directly attached to the center at one end and extending outwardly along the symmetry axis toward the first beam; a frame part connecting the first beam to the second beam, the frame part comprising a first cross-shaped frame portion on one side of the symmetry axis and a second cross-shaped frame portion on an opposite side of the symmetry axis, wherein the first cross-shaped frame portion and the second cross-shaped frame portion are lying in the plane and are symmetric to one another with respect to the symmetry axis; the proof mass further comprising a plurality of beams fixed to the inner edge of the proof mass and extending toward the center of the proof mass. a proof mass having an outer edge bounding a first area, an inner edge disposed within the first area and bounding a second area smaller than the first area, and a center disposed within the second area, wherein the outer and inner edges and the center are disposed in a plane; a substrate and an anchor coupled to the substrate, wherein the anchor is connected to the center; and a plurality of tethers coupling the inner edge of the proof mass to the center, wherein at least one of the plurality of tethers is symmetric with respect to a symmetry axis that lies in the plane and that passes through the center of the proof mass, the at least one tether of the plurality of tethers comprising: a first beam directly attached to the inner edge of the proof mass at one end and extending inwardly along the symmetry axis toward the center; a second beam directly attached to the center at one end and extending outwardly along the symmetry axis toward the first beam; a frame part connecting the first beam to the second beam, the frame part comprising a first cross-shaped frame portion on one side of the symmetry axis and a second cross-shaped frame portion on an opposite side of the symmetry axis, wherein the first cross-shaped frame portion and the second cross-shaped frame portion are lying in the plane and are symmetric to one another with respect to the symmetry axis; a first beam directly attached to the inner edge of the proof mass at one end and extending inwardly along the symmetry axis toward the center; a second beam directly attached to the center at one end and extending outwardly along the symmetry axis toward the first beam; a frame part connecting the first beam to the second beam, the frame part comprising a first cross-shaped frame portion on one side of the symmetry axis and a second cross-shaped frame portion on an opposite side of the symmetry axis, wherein the first cross-shaped frame portion and the second cross-shaped frame portion are lying in the plane and are symmetric to one another with respect to the symmetry axis; the proof mass further comprising a plurality of beams fixed to the inner edge of the proof mass and extending toward the center of the proof mass. <EOS>