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What are the parts of a centre square?

Shop for Centre and Edge Finding Sets

Labelled diagram showing the parts of a centre square

Arms

A round workpiece is placed between the two arms of the centre square, so that its centre can be located. A round workpiece is placed between the two arms of the centre square, so that its centre can be located.

Notch

The notch in between the arms of the centre square provides a starting point from which the user can scribe. The notch in-between the arms of the centre square provides a starting point from which the user can scribe.

Blade

The blade of the centre square bisects the arms with its straight edge. It is used to guide a scriber across the workpiece. The intersection of the lines scribed indicates the location of the centre point. The blade of the centre square bisects the arms with its straight edge. It is used to guide a scriber across the workpiece. The intersection of the lines scribed indicates the location of the centre point.