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Ross Stepmur 10×50
10x50, Binoculars, Porro IISpecifications:
Objective diameter (according to spec): 50 mm
Effective objective diameter (measured): 48 mm
Magnification: 10x
Exit pupil (according to spec): 5 mm
Effective exit pupil (measured): 4.8 mm
IPD: 55 - 74 mm
Usable…