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A| Style | Model | Surface Size | Thickness | Application Grade | Color | Material | Flatness Unilateral Tolerance | Price | |
|---|---|---|---|---|---|---|---|---|---|
| A | 81969 | 150 mm x 225 mm | 75 mm | Laboratory | Pink | Granite | 150 mm | £1,734.31 | |
| A | 81970 | 150 mm x 225 mm | 75 mm | Inspection | Pink | Granite | 150 mm | £1,476.90 | |
| A | 81961 | 225 mm x 300 mm | 75 mm | Laboratory | Pink | Granite | 150 mm | £2,505.64 | |
| A | 81965 | 300 mm x 450 mm | 100 mm | Inspection | Pink | Granite | 150 mm | £2,727.13 | |
| A | 81964 | 300 mm x 450 mm | 100 mm | Laboratory | Pink | Granite | 150 mm | £3,571.94 |
Granite tri squares from Starrett offer an economical way to check X, Y and Z axis alignments on CNCs and CMMs for precision layout, inspection and tooling setup. These Grade AA Laboratory and A inspection tri-squares are suitable for quality control. They are available in thickness ranging from 75 to 150 mm. Raptor Supplies offers a wide range of Starrett granite squares, also used for direct checking of squareness and straightness.