Screwtype base fixing provides a stable, shake mounting for reliable performance in varying water conditions. Stable antivibration: sleeve structure ensures firm fixation after tightening, resisting hull movement and reducing vibration. Fish Finder Display installation position: sleeve structure located under the base allows adjustable placement; loosen the knob to reposition for viewing. Probe installation position: the cantilever knob can be twisted to adjust the probe direction, enabling precise orientation. Use scenario: mount a fish finder display on a small boat or vessel where hull movement occurs, ensuring the display stays steady and readable. Use scenario: adjust the display angle at the helm to reduce glare and improve visibility by loosening and retightening the knob. Use scenario: align the probe orientation quickly when changing fishing conditions or mounting locations by rotating the cantilever knob.