Starrett Three Face Granite Tri-Squares
Three-Face Granite Tri-Squares provide an excellent, economical way to check X, Y and Z axis alignment on CNCs and CMMs. They can also be used in the same way as a steel square for direct checking of squareness and straightness.
Laying in the horizontal position, the X and Y axes can be checked for 90º squareness. With the square in the vertical position, tracing along the vertical edge of the square can check the perpendicularity of the Z axis.
- Grade (U.S.): AA Laboratory Squares: .000025"/6" TIR (0.0006/150mm)
- Grade (U.S.) A Inspection Squares: .000050"/6" TIR (0.0012/150mm)
- Made in the U.S.A.
For more info, visit www.p65warnings.ca.gov.
