Lockout device

A portable lockout device for preventing use of a handle or the like, comprising:

• an inner piece and an outer piece, each of the inner piece and the outer piece having an arcuate outer surface and an arcuate inner surface, wherein said inner piece and said outer piece are telescopically and rotationally engaged such that said inner piece is substantially nested within said outer piece when said lockout device is in an opened position and substantially extended from within said outer piece when said lockout device is in a closed position;
• an arcuate rail projecting from approximately the center of the outer surface of said inner piece;
• an arcuate track formed within the inner surface of said outer piece, at approximately the center of said inner surface, wherein said rail slides along said track to provide telescopic and rotational movement of said inner and outer pieces;
• and
• an interlock, wherein said interlock includes a crossmember that engages a portion of the track when said lockout device is in the closed position, wherein said engagement of said crossmember and said portion of the track prevents further telescopic and rotational movement of said pieces beyond said closed position.