Patent ID: 7082692

Claim:
An adjustable ruler, comprising: first and second elongate ruler members, each of said ruler members including a slot with parallel longitudinal sides and channels along said parallel longitudinal sides and measuring indicia marked therealong, and said first ruler member being movable relative to said second ruler member; an adjustable clamping member received in each of said slots, said clamping member including a first slide member slidably secured in said slot of said first ruler member, a second slide member slidably secured in said slot of said second ruler member, said first and second slide members each engagable with said slot sides, a selectively releasable connection between said first and second slide members, said connection adapted to selectively permit relative pivoting of said slide members about a pivot axis and to selectively hold said slide members together, and a biasing member biasing said first and second slide members apart in the direction of the pivot axis; wherein said releasable connection is adapted to selectively secure said first and second ruler members together in frictional engagement maintaining said first and second ruler members in selected positions relative to one another; wherein said channels of said first ruler member are open in a direction opposite said channels of said second ruler member and said flanges of one slide member project toward said flanges of said other slide member.