Hood, Grant · Kansas City, Mo. : Kansas City Jeweler and Optician · leaf 23
e vault and oper-ated by electricity. The temperature will vary only aboutone-fourth to one-half of a degree. This vault is a success asfar as constant temperature is concerned, but as the barometricpressure of the atmosphere affects the time of the clocks asgreatly as the variable temperatures,… … ft6 20 TIME SERVICE OF TODAY. far it has been only partially successful. The only way ofits success being assured seems to be in making a large glassglobe similar to the ones used on air pumps, and exhaustingthe air. This shows to what extent our Government will expendtime and money to perfect a…
Clocks and watches
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