Mountbatten Brailler

It uses the traditional "braille typewriter keyboard" of the Perkins Brailler with modern technology, giving it a number of additional features such as word processing, audio feedback and embossing.

The machine was pioneered and developed at the United Kingdom's Royal National College for the Blind in Hereford by Ernest Bate.

By simultaneously pressing different combinations of the six keys, users can create any of the characters in the braille code.

Like a manual typewriter, it has a knob to advance paper through the machine, although unlike the Perkins the bar does not move.

The rollers that hold and advance the paper have grooves designed to avoid crushing the raised dots the brailler creates.