n brought to would exercise a disturbing influence. Changes of next step is to compare the time of transit as record- such a pitch of perfection that the machine-made ed by the sidereal clock at Waltham with the time of temperature are reduced to a minimum by insulation watch is able to hold its… … C, B. & Q. Railroad disks, generally of The building is designed to protect the clocks from disturbing influences that would cause variations 1n the time. Temperature changes and moisture are precluded car accountant's of- aluminium. by the double walls and celling providing an 18-inch air space…
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