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Shop manual refracting
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General Refractometer: +/-0.2% Accuracy, Manual, Analog, 6 1/4 in Overall Dp, 5 7/8 in Overall Wd Model: REF401
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Vee Gee Refractometer: Sodium Chloride (Naci), +/-0.2% Accuracy, Manual, Analog, 6 1/2 in Overall Dp Model: 43035
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