Abstract: A device for use in plotting equal spacings over a distance includes a frame comprising opposed first and second pairs of frame members with each frame member having opposed ends and pivotal connecting means for pivotally connecting adjacent frame members at respective ends thereof. Each of the first pair of frame members includes a plurality of longitudinally spaced-apart apertures disposed along its respective length. The device further includes a flexible linear member placed continuously through the apertures of said first pair of frame members to provide a plurality of parallel equally spaced apart linear elements which are disposed in substantially parallel relation with each other and with the second pair of frame members, and a marker element being slidably attached to each of the plurality of linear elements.