Nobex OC-400 Octo 400 Folding Square 400mm (16")

Handy folding square. You can take it anywhere you go. It locks accurately at the following angles (22.5, 45, 67.5, 90, 112.5, 135 and 157.5 degrees) with a patented mechanism. This is a precision tool made in aluminium and stainless steel.