The Encyclopedia Americana, Volume 7Grolier, 1988 - Encyclopedias and dictionaries |
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Page 92
A good pendulum clock with a deadbeat escape- ment is accurate to a few seconds per day . Smaller portable clocks , whose timekeeping element is a balance and spring , require escape- ments of a different type ...
A good pendulum clock with a deadbeat escape- ment is accurate to a few seconds per day . Smaller portable clocks , whose timekeeping element is a balance and spring , require escape- ments of a different type ...
Page 379
COMMERCE , Department of , an executive depart- ment of the U.S. government , created to promote the country's international trade , economic growth ... and on March 14 , 1913 , the agency was divided into separate depart- ments .
COMMERCE , Department of , an executive depart- ment of the U.S. government , created to promote the country's international trade , economic growth ... and on March 14 , 1913 , the agency was divided into separate depart- ments .
Page 382
When one design is selected for develop- ment , a three - dimensional model is prepared by a model maker . After necessary modifications are approved , a draftsman and an illustrator pre- pare detailed working drawings from which a ...
When one design is selected for develop- ment , a three - dimensional model is prepared by a model maker . After necessary modifications are approved , a draftsman and an illustrator pre- pare detailed working drawings from which a ...
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