Vertical Speed Indicators - Certification - CoC

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Winter Instruments
MacCready-ring, unmarked, 57 mm
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Winter Instruments
MacCready-ring with bezel-ring, 57 mm
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Winter Instruments
MacCready-ring, marked, 57 mm
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Winter Instruments
MacCready-ring with bezel-ring, 80 mm
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Winter Instruments
MacCready-ring, marked, 80 mm
Quick info

Winter Instruments
MacCready-ring, unmarked, 80 mm