Abstract: A pendently suspended instrument for indicating the balance condition of a generally horizontal centrally apertured wheel includes a wheel support member having an upwardly facing surface for engaging the bottom side of the wheel. An elongated tube extends upward from the surface and a line is trained through the tube and secured to a member threaded in the center of the tire support member and tube for enabling vertical adjustment of the effective point of attachment of the line to the wheel support member. The upper end of the line is configured for attachment to an elevated support. A spring loaded wheel centering element, of upwardly converging shape, is carried slideably at the center of the wheel support member. The upwardly converging shape is produced by a plurality of angularly spaced apart triangular blades projecting upward from the wheel centering element and passing slideably through radially elongated slots in the wheel support member.