1. The water level measuring needle is installed on the wooden frame and other bases. No deformation, vibration and all other phenomena affecting zero height are required.
2. When installing the water level probe SCM40/60, level it with a leveling ruler, and simultaneously measure the zero height with a scale ruler and the center line.
3. When in use, install the measuring needle and tighten it with the flat cap. Pull the measuring rod to make the needle tip close to the water surface, and then turn the knob until the needle tip touches the water surface to get the water level reading.
4. After a period of use, you can remove the inching wheel, take out the parts of the inching mechanism, clean them with gasoline or kerosene, and then reassemble them with a little clean engine oil.
5. After long-term use, if the measuring rod, micro sleeve and knob are found to be too loose, and the adjustment is ineffective, the reed can be trimmed or replaced for repair.
I hope it will be useful to you, and hope to adopt it.