English - half chronometer. This term originally used to denote watches having an escapement compounded of the lever and chronometer, appears now to be applied to fine lever watches which have been adjusted for temperature and positions.
The first part was referencing two escapements, the Swiss "lever" and the English spring detent "chronometer". You can, and many have, write volumes on the use of the term "chronometer", but in short it was used by the English to describe a type of construction, whereas the Swiss used it to define a level of performance. Sadly, today COSC has trademarked the term for marketing use and the actual timekeeping standard of a so-called chronometer is dismal.
Tick Talk says, "A watch in the hand is worth two on the wrist"
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