- Inventory work while marking wood, steel etc.
- As a colony counter for bacterial culture test
- Check the grading of the answer sheet and count the score at school, cram school etc
- Receipt and seal at pick up and delivery, quantity check, etc.
- Confirmation of the receipt seal of receipt tickets and receipts and the number of sheets issued
- Check and mark the soldering of wiring
- Bolt tightening marking and quantity check of steel work