Portable Pencil Hardness Tester |
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Applications The Pencil Hardness Tester is applicable to determine the hardness of coating film. It is suitable for labs and building sites. It also can examine the hardness of coating film on any direction. ¡¡ Structure and working principle The instrument is mechanical. Three point (Two wheels, and a lead core) contact the tested surface always to ensure the pencil and the tested surface forms the angle of 45 degrees, so as to push the movement of the instrument, to complete the testing process. Speed: 1mm/second.
Standard Accessories ¢Ù.13pcs* pencils£º 6B¡¢5B¡¢4B¡¢3B¡¢2B¡¢B¡¢HB¡¢H¡¢2H¡¢3H¡¢4H¡¢5H¡¢6H ¢Ú.1* Pencil hardness meter (500g) ¢Û. 1* Cushion block ¢Ü. 1* Knife ¢Ý. 1* Small Magnifier ¢Þ. 1* Eraser ¢ß. 1* Small brush ¢à. 1* User manual ¡¡ Use Instructions ¢Ù.Preparation: Cutting the pencil with the knife to expose the column lead core 5-6mm (kind attention: must not be loosened or cut the lead core), and holding the lead core and¡°No.:400¡± sand paper to make a 90 angle, and keeping circle on the sand paper, to grind the end face of the lead core, until the end face is smooth and the edge is sharp (The edge shall not be broken or notched). The pencil should be rotated 180¡ãor regrind before using next time. ¢Ú.Operation: Place the instrument on the flat bench, and place the cushion block under the instrument, insert the pencil into the hole on the main body of the instrument, and make the pencil edge to contact the main body, and then tighten the screws(As the picture shown)
¡¡ ¢Û.Place the instrument on the tested surface, and scratch with force (this force or broking the lead core edge or scratching the film,and forward it with the speed of 1mm/second. From the hardest pencil (6H), scratch each level of pencil with five 3mm long mark, until find out the one which cannot hurt the film, THAT pencil hardness represents the tested film hardness. Product Display
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Item Included Portable Pencil Hardness Tester(220112)
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