Adjustable radial curve radius setting scale

Abstract

An adjustable radial curve radius setting scale is provided having an end supporting bar to which there is attached an assemblage of stacked elements. The stacked elements comprise a first level radial arm having connecting dowels, second and third level long chords are attached to the radial arms. Second and third level diagonal braces are attached to the first level radial arms. Fourth level diagonal braces are attached to the first level radial arms and fifth and sixth level brace chords are attached to the fourth level diagonal braces. The seventh level radial arms have outer guide pins and inner raised bosses with apertures to received the dowels of the lower radial arms. The assemblage is snap-fitted together by means of an O-ring on the dowels of the first radial arms. The assemblage is free to rotate to form a curve of any desired radii. At least one working edge is secured between the first and seventh radial arms and may be locked in a given pre-set radius by a latching mechanism.

Dependencies are inferred from the claim text.