An inertial sensor, comprising: a proof mass spaced apart from a planar surface of a substrate , the proof mass having a first section , a second section , a third section and a fourth section , the first, second, third and fourth sections being arranged in respective quadrants relative to a center point of the proof mass with the third section diagonally opposing the first section relative to the center point of the proof mass and the fourth section diagonally opposing the second section relative to the center point of the proof mass , each of the first and third sections having a first mass, and each of the second and fourth sections having a second mass, the first mass being greater than the second mass; a first lever structure connected to each of the first and second sections ; a second lever structure connected to each of the second and third sections ; a third lever structure connected to each of the third and fourth sections ; a fourth lever structure connected to each of the fourth and first sections , wherein the first, second, third, and fourth lever structures (28 - 34) are configured to function cooperatively to enable translational motion of the first, second, third, and fourth sections (44 - 50) of the proof mass in response to a first linear acceleration force imposed on the inertial sensor in a direction perpendicular to the planar surface ; a frame member spaced apart from the planar surface of the substrate , the frame member surrounding the proof mass , wherein the first and third sections are directly attached to the frame member and the second and fourth sections are detached from the frame member ; and a rigid beam spaced apart from the planar surface of the substrate and interconnecting the second and fourth sections , wherein the first and third sections are detached from the rigid beam . a proof mass spaced apart from a planar surface of a substrate , the proof mass having a first section , a second section , a third section and a fourth section , the first, second, third and fourth sections being arranged in respective quadrants relative to a center point of the proof mass with the third section diagonally opposing the first section relative to the center point of the proof mass and the fourth section diagonally opposing the second section relative to the center point of the proof mass , each of the first and third sections having a first mass, and each of the second and fourth sections having a second mass, the first mass being greater than the second mass; a first lever structure connected to each of the first and second sections ; a second lever structure connected to each of the second and third sections ; a third lever structure connected to each of the third and fourth sections ; a fourth lever structure connected to each of the fourth and first sections , wherein the first, second, third, and fourth lever structures (28 - 34) are configured to function cooperatively to enable translational motion of the first, second, third, and fourth sections (44 - 50) of the proof mass in response to a first linear acceleration force imposed on the inertial sensor in a direction perpendicular to the planar surface ; a frame member spaced apart from the planar surface of the substrate , the frame member surrounding the proof mass , wherein the first and third sections are directly attached to the frame member and the second and fourth sections are detached from the frame member ; and a rigid beam spaced apart from the planar surface of the substrate and interconnecting the second and fourth sections , wherein the first and third sections are detached from the rigid beam . <EOS>