Carpenter's Square hedue ZY 800 mm with mm-scale and marking holes SB (blue)

Seamless hardened steel Carpenter's Square with bright blue powder coating
Carpenter's Square hedue ZY 800 mm with mm-scale and marking holes SB (blue)

With marking holes

Carpenter's Square hedue ZY 800 mm with mm-scale and marking holes SB (blue)

Millimetre scale on both sides of the long leg