Abstract: The invention is a bicycle seat attachable to a bicycle seat post. The bicycle seat comprises a right support section, a left support section, and an attachment device for fixedly attaching the right support section and the left support section to the bicycle seat post. For purposes of description an x-y-z coordinate system fixed with respect to the portion of the attachment device that attaches to the bicycle seat post is defined. The z-axis is aligned with the bicycle seat post, the y-axis is normal to the plane of the bicycle frame, and the x-axis is directed toward the front end of the bicycle when the bicycle seat is properly oriented with respect to the bicycle. The right support section has an angular range of adjustment about a z'-axis, and the left support section has an angular range of adjustment about a z"-axis where the z'-axis and the z"-axis are different axes fixed with respect to the x-y-z coordinate system and within 30 degrees of the z-axis.

Abstract: A balance mechanism for automatically lifting known weights in a single-arm balance comprised of two plates, a first plate supporting the known weights and a pan for an unknown mass to be weighed and a second counterbalancing plate coupled to the first through a box lever having diagonal corners connected to a support member through flexible elements that will permit the box lever to pivot about a diagonal axis in response to a vertical force at one free corner connected to a corner of one balance plate or in response to a vertical force at the other free corner connected to a corner of the other balance plate. One balance plate is secured in space by two taut rectangular loop lines, one line being connected taut to diagonally opposite corners of the plate and to elements affixed to the support member in a position over the free corners of the plate, and the other line being connected taut to the free corners of the plate and to elements affixed to the support member in a position over the other two corners.