1. Hand-screw nut（4pcs） 3. A4 paper（1pcs）
2. Nozzle-head
（
1pcs
）
4. Nozzle
（
1pcs
）
When users turn the hand-screw nut clockwise, the platform
will rise, and when users turn the nut clockwise, the platform will
fall.
In the same way, touch the "second point", "third point" and
"fourth point" on the screen in turn, and use the same method to
turn the hand-screw nut under the platform to manually level the
platform.
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