Out Of Square

Out Of Square

Definition: Out of square refers to any rectangular or square object, such as a picture frame or mat, in which the corners are not precisely 90° angles. This can also be detected when diagonal measurements of the rectangle do not match, indicating a skew or misalignment in the structure.

Overview

In picture framing, being out of square can affect the visual presentation of artwork, causing gaps between the frame and the artwork or uneven spacing of mats. It may also impact the structural stability of the frame and the proper fit of glazing or backing boards.

Causes

• Improper cutting or joining of frame moulding.
• Warping of wood or other frame materials due to humidity or temperature changes.
• Uneven surface or pressure during assembly.
• Damage during shipping or handling.

Detection

• Measure diagonals of the frame; if they are not equal, the frame is out of square.
• Use a carpenter's square or a combination square to check corner angles.
• Visual inspection for gaps or misalignment when assembling mats and artwork.

Prevention & Correction

• Ensure precise cutting and joinery during frame assembly.
• Allow wood to acclimate to ambient humidity before cutting or joining.
• Clamp and adjust frames during glue drying to maintain squareness.
• Check frames before final installation of artwork or glazing.

Related Terms

• Tape Measure
• United Inch
• Metric
• Ruler