Specifications
| Light source illumination | Not less than 1200X |
| Distinctness of image | 0.1、0.2、0.3、0.4、0.5、0.6、0.7、0.8、0.9、1.0、1.2、1.5、2.0 |
| Pattern area | Not less than 60 x 60mm |
| Power Supply | 6V (4 AA dry batteries) |
| Test environment | Temperature 23 ℃ +/- 2 ℃, Relative Humidity 50 +/- 5% |
Packing list
host X1, manual X1, certificate X1, warranty card X1
After-sales instructions
Warranty days: 365 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/3492/Specification.html , which is only used by users who purchase commodities from the NBCHAO.