28/05/2026
One of the Most Common Errors in Levelling 📏
❌ Staff not held vertically
What happens?
➡️ The reading becomes inaccurate
➡️ Elevations change incorrectly
➡️ Survey results become unreliable
Even a small staff tilt can create big construction errors on site.
In surveying, accuracy depends on both the instrument and the person holding the staff.