7202-063 Triangular level. These things show up often enough to make it clear that they were manufactured, but the maker has always been a mystery. A few years ago one showed up with a partial label describing it as "Fritschler's Right and Left Hand Plumb with Level, Square and Mitre," but the identity of Fritschler has remained a mystery. 15" size, three vial version, one in each of the shorter legs, a curved one along the interior side of hypotenuse, with brass protruding edge. All vials are missing and one brass vial cover missing screw. Good- (LYN054) 150-300