| name | Pinhole Sensors |
| application | Roughness of the inner surface of the hole with an aperture greater than 2mm can be measured, the maximum depth is 9mm, and the plane cylinder can also be measured. |
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;