What is chronometer movement?
A chronometer is the NE PLUS ULTRA of portable timepieces. They are used as master timepieces for navigation particularily the nautical kind. Theuy wee evolved in the eighteenth century following the lead of John Harrison, (see who invented the Chronometer) designed for superior accuracy under the widest variable operating conditions. There are sp[ecialized variations in this sphere of timepiece structure. Hamilton had a special type of one-way detent (This may be what you are thinking of) in any case this particualr type of movement must always be SET FORWARD. (bACK SETTING) for such purposes as rerurning to standard time are done in forward motion, maybe two or more l2-hour cyles around the dial, but in forward motion. one can actually cause damage to the movement setting one of these(and your wallet or expense account) back! This harmonizes neatly with the Hamilton slogan (noloiger used) Jamais Arrieres- never backwards! It strictly applies to the Chronometer movement and a similar
