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GPS 수직도 관리 기술
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| 목차 |
| 1. Why verticality management is being important? 2. Comparison with existing technique 3. Principle of GPS 4. Error of GPS 5. Advantages and Disadvantage 6. Current Status 7. Future Expectation |
| 본문내용 |
| Comparison with existing technique 1. Pendulum – It is used hanging from the ceiling Feature A safety risk Effect on the environment Inconvenience in measure Comparison with existing technique 2. Laser – It is used with verticality Advantage Prevention of fall accident Low effect on the environment Disadvantage Impossibility of transmission due to obstacle Not a few of the time to required |