This Stanley Combination Square has an easy to read long lasting engraved blade, 300mm (12in), marked metric and imperial for easy use. It has a 360-degree vial for allround visibility.This versatile square can be used as a try and mitre square, depth or height gauge and spirit level. It has a lightweight and durable metal body with 3 machined faces and a scriber fitted for accuracy and convenience. The heel is synthetic for light weight.Specification: Length: 300mm (12in).Additional Information:Size (mm): 300Blade Material: Steel