Starrett Six-Face Granite Cubes
Starrett Six-Face Granite Cube 3L x 3W x 3T - Grade AA Laboratory - 81980 Granite Six-Face Cubes have all six faces finished flat, perpendicular and parallel. They are made from pink granite. Grade (U.S.): AA Laboratory: .000025"/6" TIR (0.0006/150mm) Grad
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Starrett Six-Face Granite Cube 3L x 3W x 3T – Grade AA Laboratory – 81980
Granite Six-Face Cubes have all six faces finished flat, perpendicular and parallel.
They are made from pink granite.
- Grade (U.S.): AA Laboratory: .000025″/6″ TIR (0.0006/150mm)
- Grade (U.S.): A Inspection:.000050″/6″ TIR (0.0012/150mm)
- Made in the U.S.A.
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