In 1896 , he invented the bubble sextant for use in celestial navigation .
Cluett was known for several inventions , including a sextant and farm mowers , before patents for Sanforizing .
In 1896 , Cluett invented the bubble sextant for use in celestial navigation .
Cluett was known for several inventions , including a sextant and farm mowers , before patents for Sanforizing .