According to the specular gloss test method in ASTM D 523, the golss shall be measured on the test specimen at an incidence angle of 60°after providing the standard calibration to the golssmeter using a reference plate. The golss measured shall be reported as”60 deg. gross” at a specified incidence angle can be measured through the receptor. Use Digital Modified Angle Glossmeter UGV-4D manufactured by Suga Test Instruments Co.,Ltd., or equivalent as a test apparatus. The surface of dies used for preparing test specimens for this test shall have treatment and finish equivalent to the following: