x per cent it is possible to determine to one- of the watches submitted by the hundredths of a second the time of Waltham Watch Company have been the transit of the star across each accepted and passed in Class A. A hair line. By taking the mean of Interior of the Observatory, Showing the Transit.… … aluminium. fice won the second Summing up, then, we find that class in four min- the great accuracy Sectional View Through the Clockroom. obtained in this utes and _ forty-one clockroom is due. to seconds.
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