The index wheel of a 218 movement is 2.40mm (0.095″) (close in size to a 214 index wheel) has 320 teeth, each of which is about 0.01mm high (0.0004″) and 0.02mm (0.0008″) wide. The index and pawl jewels are perfect little square blocks of synthetic ruby, 0.18mm (0.007″) square and 0.06mm (0.002) thick. After a year, the index wheel has rotated 29,166,666 million times, or 79,000 times per day. So, for an Accutron made in 1960, that has been operational for 63 years, the berrilium copper index wheel has rotated 1 billion, 837 million, 500,000 times. Show me a device made to last longer, I dare ya!

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