Braille block textured pavement strips - GIF

Braille block textured pavement strips.

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Previously:

Andersson and Sorensen braille typewriter - photo
Braille micrometer for blind machinists - photos
Braille money labelling - GIF
Braille typewriter - GIF
Braille-etched gazebo railing - photo
Perkins braille typewriter - GIF

It must be stuttering.