This instrument offers an easy method for the determination of film hardness for coating applied to a flat substrate. The pencil lead, prepared beforehand by rubbing it on fine abrasive paper（400）,is maintained at an angle of 45º and pushed with uniform pressure onto the sample, either leaving a superficial trace or causing destruction down to the substrate. It complies with the requirements of ASTM D 3363, ISO 15184.
Main Technical Parameters
■ Three points are touched on the tested surface（roller、pencil lead）
■ The angle between pencil and the tested surface： 45°
■ Built-in spirit bubble, convenient to check level when tester is working
■ Pressure of pencil tip：500g/750g/765g/1000g
■ Packing List：
① Pencil Tester, Body
② 1 Set of Pencils （12） ：-4B-3B-2B-B-HB-H-2H-3H-4H-5H-6H.
③ Special Pencil Sharpener
④ Abrasive Paper, 400 grade grit.
⑤ Calibration Certificate
■ Ordering Information：
BGD 506/1---Pencil Hardness Tester（500g）
BGD 506/2---Pencil Hardness Tester （750g/7.35N±0.1N）
BGD 506/3---Pencil Hardness Tester （1000g）
BGD 506/4---Pencil Hardness Tester （7.5N±0.1N/765g）
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