The Waterbury time and strike tambour mantle
clock with steel plates and brass bushings that has the name Cheyene on the
bottom of the case along with the number 12934 stamped on the paper has a
strike mainspring not quite as strong as the typical 8 day
american clock. The time mainspring measures the same: .016 INCHES STRONG
PLUS OR MINUS .0005 INCHES BY .075 INCHES PLUS OR MINUS .010 INCHES
BY 96 INCHES LONG PLUS OR MINUS 3 INCHES.
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