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I think 15mm ER is quoted as the optimum shortest length for eyeglass users, with the type6 naglers they all have 12mm ER so it could be borderline and something to consider , with my 9mm type6 to take in the full field i nearly have to press my eye against the objective. I would like to try the 16mm tpye 6 one day and see how that goes with 10mm ER
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