/ Precision Measuring Tools / Surface Plates / Surface Plate Accessories / Granite Tri-Squares / G-81968 * Not actual product image G-81968 Granite Tri-Square 81968 Granite Tri-Squares 18" x 24" x 4" Inspection Granite Tri-Square - Grade A 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. Specifications Downloads Product Testimonials Other similar products G-81961 Granite Tri-Square G-81962 Granite Tri-Square G-81964 Granite Tri-Square G-81965 Granite Tri-Square G-81967 Granite Tri-Square G-81968 Granite Tri-Square G-81969 Granite Tri-Square G-81970 Granite Tri-Square G-81971 Granite Tri-Square G-81972 Granite Tri-Square Contact Starrett Specifications Made in America: Yes Size LxWxT (in): 18 X 24 X 4 Grade (U.S.): A Inspection Size LxWxT (mm): 450 X 600 X 100 Downloads Catalog 33 - Section 20 - Precision Granite Products Products and services range from standard surface plates and metrology accessories to engineering collaboration for unique solutions and complex assemblies. Our skilled technicians build your product in our state-of-the-art, environmentally controlled manufacturing facility. Precision Hand Tools (Catalog 33) 612 page catalog featuring precision hand tool, force measurement, vison systems, optical comparators, laser measurement, and flat stock. Product Testimonials Write a product review Write a product review Comments* First Name* Last Name* Email* Occupation The information you provide will be used in accordance with the terms of our privacy policy. I agree to the privacy policy. Please provide the required information. Thank you for submitting a product testimonial on www.starrett.com. By submitting information to Starrett, you acknowledge and give express permission for the L.S. Starrett Company to use and share your statements.