Multi-purpose tool

#1. Field of the Invention

#This invention relates generally to straight edge tools of the sort used by construction workers, paperhangers, carpenters, hobbyists, or the like, and more particularly is directed towards a new and improved combination level, straight edge, guide, ruler and adjustable T-square of great utility.

#2. Description of the Prior Art

#FIG. 1 is a view in perspective of a tool made according to the invention,

#FIG. 2 is a view in side elevation thereof,

#FIG. 3 is a top plan view thereof,

#Referring now to the drawings, the reference character 10 generally indicates a multi-purpose tool comprised of a relatively wide, straight, elongated body portion 12 and a detachable T-bar 14 connected to either end thereof. The body portion 12 is provided with a medial handle 16 and is formed with beveled faces along opposite longitudinal marginal edges. The beveled faces 18 and 20 are marked in linear scales, one of which, face 18, is graduated in feet and inches while the face 20 is graduated in metric measurements. The marking indicia may be color coded to facilitate reading the measurements along the straight edges and, for example, the millimeter numbers may be yellow, centimeter numbers red, and the decimeter numbers green.

#In the preferred embodiment of the invention, the body portion 12 should be relatively long, on the order of four feet or more, although a shorter length of perhaps two feet may be used for some work. The maximum practical length for the body portion would be in the neighborhood of eight feet or so, but for most general work a four foot length is preferred. The body should be relatively wide and typically may be on the order of 3 to 6 inches in width so as to provide a stiff, wide, flat rule, providing a very stable tool, particularly when using the tool as a straight edge over a long expanse for level work as will be described more fully below.

#The body portion 12 may be fabricated from a variety of materials, and, in practice, extruded aluminum has been found to be satisfactory. Other suitable materials including high quality woods, or plastics with metal inserts along the straight edge may also be used to advantage. In practice, the body portion is formed with openings 22 which reduce the weight of the tool and enhance its structural stability.