0:03
Please enable Javscript
Moving a pencil eraser
Please enable Javscript
0:01
Please enable Javscript
Morse code with a weak signal, "erase"
Please enable Javscript
0:13
Please enable Javscript
Erasing on a chalkboard, fast, stereo image. Vintage recording.
Please enable Javscript
0:07
Please enable Javscript
Writing on blackboard with chalk in a quick and rushed fashion.
Please enable Javscript