There are 25.4 mm in one inch therefore 420mm is equal to 420/25.4 inches

or 16.53543307 inches

or 16.53543307 inches

There are 25.4 mm in one inch therefore 420mm is equal to 420/25.4 inches

or 16.53543307 inches

or 16.53543307 inches

16.535

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