Patent ID: 8887408

Claim:
An apparatus for confirming right angles at corners of a rectangular structure with a tape measure, the apparatus comprising: a tab part having opposite top and bottom surfaces; a first side surface projecting outwardly from the tab part bottom surface; a second side surface projecting outwardly from the tab part bottom surface, the first and second side surfaces being relatively positioned defining an angle between the first and second side surfaces; an edge surface projecting outwardly from the tab part top surface, the edge surface being dimensioned to be engaged by a tab of a tape measure; a tape part that is separate from the tab part, the tape part having opposite top and bottom surfaces; a first side surface projecting outwardly from the tape part bottom surface; a second side surface projecting outwardly from the tape part bottom surface, the first and second side surfaces being relatively positioned defining an angle between the first and second side surfaces; and an indicator on the tape part top surface, the indicator being positioned to align with a tape of a tape measure when a tab of the tape measure is engaged against the edge surface of the tape part and the tape of the tape measure is extended from the tab part and across the top surface of the tape part and is positioned adjacent the indicator, whereby the indicator aligning with the side of the tape indicates a distance measurement on the tape between the edge surface of the tab part and the indicator of the tape part.