Abstract: A jack stand for attachments, such as the feeder house/header combination, to agricultural machines, such as a combine, is disclosed wherein the jack stand includes a supporting plate attachable to the attachment and provided with an arcuate row of holes spaced even radial distances about a pivot and a pair of telescoping leg members, one of which is pivotally connected at one end to the pivot. A bracket, spaced from the pivot at said same radial distance from said pivot as the arcuate row of holes, is affixed to one of the leg members to receive a pin passed through a selected hole of said arcuate row thereof to establish said leg members at a desired angle relative to a supporting surface. One of the leg members includes a row of transverse holes which is alignable with at least one transverse hole in the other leg member to receive a pin therethrough to establish a desired length of said leg members.