| HS Codes | Unit Code | Unit | Descriptions in Chinese | Descriptions in English |
|---|---|---|---|---|
| 90171000 | 1 | 台 | 绘图台及绘图机 | Drafting tables & machines, whether or not automatic |
| 90172000 | 1 | 个 | 其他绘图、划线或数学计算器具 | Drawing, marking-out or mathematical calculating instruments, nes |
| 90173000 | 1 | 个 | 千分尺、卡尺及量规 | Micrometers, callipers & gauges |
| 90178000 | 1 | 个 | 其他手用测量长度的器具 | Instruments for measuring length, for use in the hand, nes |
| 90179000 | 9 | 千克 | 品目9017所列仪器及器具的零件、附件 | Parts & accessories for use with the apparatus of heading No 90.17 |
