Specifications
| Load | 500/750/1000g |
| Standard pencil | 6H-5H-4H-3H-2H-H-F-HB-B-2B-3B-4B-5B-6B |
| Three-point contact with the measured surface | Two rollers, pencil lead |
| Scratch speed | 1mm/s |
| test angle | 45° |
Packing list
Pencil hardness tester x1, 1000g weight x1, 750g weight x1, pencil x13, eraser x1, pencil sharpener x1, horizontal pad x1, sandpaper x1
After-sales instructions
Warranty days: 730 days
1. For product quality problems caused by non-human products of instruments and equipment, the manufacturer will provide free warranty services during the warranty period;
2. There is no warranty period for fragile and consumable parts, and if you find product quality problems after receiving the goods, please apply for return and exchange within 7 days, and you will not wait for the overdue ones;
[Note] For after-sales services outside the Chinese mainland, if the instrument requires repair, the shipping and possible associated taxes shall be borne by the sender. Generation address of the manual: http://en.nbchao.com/p/1473/Specification.html , which is only used by users who purchase commodities from the NBCHAO.