400mm x 600mm Big J Pro Metric Aluminum Framing Square 99-027K the included safety chains prevent

the included safety chains prevent it from collapsing accidentally

7% and is compatible with the Keson MP201 measuring wheel

The Dutch Hill Carbon Fiber Tripod comes in two extended height variations to suit most mounting needs

magnified counter

400mm x 600mm Big J Pro Metric Aluminum Framing Square 99-027K the included safety chains preventThe Johnson Level 400mm x 600mm Big J Pro Metric Aluminum Framing Square features an aluminum body that will not rust or corrode. It comes in 600mm x 50mm body, 400mm x 38mm tongue that is 3mm thick. It features an EZ Read thermal bonded numbers and graduations in two millimeter increments. Ideal for framing and laying rafters in metric measurements, this Johnson Level 400mm x 600mm Big J Pro Metric Aluminum Framing Square includes metric rafter