An electric eraser has a small cylinder-shaped eraser at the tip. A motor spins or shakes the eraser to rub out lines. It is used in technical drawing and similar work.
Sakura Color Products makes models that run on dry-cell batteries and models that use an AC adapter. The eraser tips are sold separately as refills. Besides refills for pencil, there are refills for ink and ballpoint pen.
The eraser tip is small, so you can erase only a narrow spot.
Translated from the Japanese original.
Type
Electric eraser
How it works
Spins or vibrates a cylinder-shaped eraser to erase