The Faithfull Centre Squares (Finders) is made from ground tool steel and has a hardened and tempered blade. The device has a useful square for rapid location of round bar or disc centre. To execute, place the round bar between the centre square. Scribe different lines on the workpiece each time changing its position. The centre of the scribed lines will provide the accurate centre of the workpiece. The Centre Squares (Finders) is supplied in a box. Ref: UTTK3339