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Protractor Plate: Diameter: 3.5 inches (90 mm), Thickness: 0.05 inches (1.2 mm), Scale Pitch: 1 degree Rod: Number of Pieces: 2 pieces, Length 6.0 inches (153 mm), Scale 3.9 inches (100 mm) Uses: Angle measurement and injury prevention and length measurement Packing Size: 10.0 x 16.0 x 5.0 cm, Weight: 0.18077905484 Pounds, Manufacturer: シンワ測定(Shinwa Sokutei)