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Author Message   Dgillette4 Tinkerer Username: Dgillette4 Post Number: 73 Registered: 04-2007 Rating: N/A Votes: 0 Posted on Tuesday, August 28, 2007 - 04:38 pm:    Hello John: A coupled rangefinder means that the lense focusing action is automatically coupled to the rangefinder in the window. As you change focus the superimposed or split rangefinder moves in accordance with it , thus taking the guessing out of distance setting. The expression is universal..Don