10x50Objective lensArmorEyecupFocus wheelHinge and bridgeNumbersPrism housingSchematic roof-prism drawing at 50 mm.Not to scale. Shows where the parts sit on a typical pair.Specs from our list notesMagnification10xObjective lens50 mmExit pupil5.0 mmWorked out from the two numbersEye relief13.7 mmPrismRoof, BaK-4FocusCentral focus, right-eye diopterBridgeClosedBodyAluminumSealingWaterproof, fogproof, nitrogen purgedWeight1.78 lb