Timekeeping for the sightless is an issue dealt with in a variety of timepieces featured below. A variety of styles including traditional pocket watches or wristwatches with flip-top covers revealing a tactile dial, strengthened hands and protuberances for the hour/minute markers. (and yes, I couldn't wait to write 'protuberances')
Montres à Tact 'Secrecy Eye' Touch Watch - with time guide below
Top half of domino-style dial for hours, bottom for minutes
Top half of domino-style dial for hours, bottom for minutes
More common flip-top Braille wristwatch Cortebert c.1955