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Sinn 303 M

Sinn 303 M km-h

Sinn 303 M-mph Silver

Sinn 303 (back)

The 303 M is a model railroad chronograph by Sinn.

The tachymeter of this chronograph is matched to a model railway. Thus, the speed of a fast model ICE can be measured as exact as that of a historic steam locomotive. A sympathetic additional function, that makes this watch an original and personal property of every true model railroader.

Variants With mph classification and date in the English language; with guilloché, galvanized silver dial.




  • Black mat or silber
  • Guilloché and elaborate silver galvanised dial
  • Indexes coated with special long-lasting, luminous paint, fine minute scale
  • External tachymeter scale ring with colored engraving


  • Hours, minutes, small seconds with hacking seconds
  • Date and day of week indication in German (km/h) or English (mph) at 3 o'clock
  • Chronograph 12 hours counter, 30 minutes counter, 60 seconds counter
  • Tachymeter scale for speeds (400 to 2 km/h or 250-1 mph)



  • 2 years (with Ar dehumidifying technology 3 years)

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sinn_303_m.txt · Last modified: 18.10.2021 10:42 (external edit)

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