Johnson 1904-0700V 7-1/4" Mach-1 Johnny Square Rafter Square with Level Vial OPE Pole Saw 8-segment collet design minimizes vibration

8-segment collet design minimizes vibration and ensures bits run true

414-ml cartridges

A thin kerf design provides faster cutting performance

No matter the angle of your cut

Johnson 1904-0700V 7-1/4" Mach-1 Johnny Square Rafter Square with Level Vial OPE Pole Saw 8-segment collet design minimizes vibrationThe Johnson 1904 0700V Mach 1 Johnny Square represents the pinnacle of rafter square evolution, merging extreme precision with on site versatility. Engineered for professional framing carpenters and demanding trade professionals, this 7 1 4" solid aluminum square features an integrated, high visibility 320 degree level vial that allows it to double as a torpedo level for checking plumb and pitch. Its CNC machined edges ensure surgical accuracy to 0.