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Were the Arabic numerals used in pre-modern times on mechanical clock faces?

Is there a specific point in time when they started to replace Roman numerals?

Edit:

Wikipedia article for Clock face claims "Clocks using only Arabic numerals first began to appear in the mid-18th century" with remark: citation needed.

Wikipedia article for Arabic numerals contains an image of a Woodcut showing the 16th century astronomical clock of Uppsala Cathedral, with two clockfaces, one with Arabic and one with Roman numerals. Not disproving the statement above as it contained "only"-clause. The clock in Uppsala also was not a time clock.

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Leonardo Fibonacci is credited with introducing the Arabic numbers (0123456789) into European use with his book, "Liber Abaci," in 1202. However, clock-face numbers remained Roman Numerals well into the 15th Century, when Arabic numbers began to appear on clocks in Britain.

As to the first use of Western Arabic numbers on a clock face. I have found no exact reference. However, I did come across another referencing the Lund Astronomical Clock, built in 1422, in Sweden (http://www.academia.edu/12745170/The_Evidence_for_Islamic_Scientific_Works_in_Medieval_Iceland).

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    To be honest, it wasn't uncommon to see Roman Numeral on clock faces in the 1970's (prior to digital watches), IIRC. I think most schools had them just on the principle that it helped teach the numeral system. – T.E.D. Oct 15 '15 at 9:10
  • @T.E.D. I still have a Roman Numeral clock for my primary clock at home. – called2voyage Oct 15 '15 at 21:26
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    @macraf I'm having trouble relocating my reference. However, I did come across another referencing the Lund Astronomical Clock, built in 1422, in Sweden (academia.edu/12745170/…). I hope this will help. – Katherine Oct 16 '15 at 0:02
  • In the early 1990s I bought a new wrist watch with Roman numerals on it & only stopped using it recently when the self charging mechanism stopped working. – Fred Oct 16 '15 at 1:42

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