1Pcs UNI Mechanical Pencil Automatic Rotation M5-452 Movable Pencil 0.5mm Smooth Writing Student Examination Office Writing Tools Stationery Supplies

Brand: UNI
Product name: Automatic rotating Mechanical pencil
Model: M5-452
Color: Black/Blue/Pink
Size: 144.5mm
Origin: Japan

Every time the writing stops, the nib leaves the paper and rotates once with the lead core through 3 gears inside the pencil. Each time it rotates 9°, the nib part maintains uniform friction. Since the part that contacts the paper can be kept fine, so Writing lines can be sharper and thicker.

There are 3 gears inside the pencil, and the middle gear is connected to the lead. Longitudinal movement by pen pressure that produces color when writing. It meshes obliquely with the other 2 gears, causing the lead core of the intermediate gear to drive the pen tip to rotate slightly each time the pen is dropped. Each rotation is about 18*20 strokes to complete one rotation.

PS:
The working principle of KURA TOGA is that every time the writing pauses, the tip of the pen leaves the paper surface, and the lead core rotates once is not in non-stop writing, the lead core keeps rotating; it means that it does not rotate unless it is not paused during the writing process. The pressure pen is too light.