The original review is below, but check out our current Bathroom Scale Reviews here. Etekcity Etekfit Digital Bluetooth. The Etekcity Etekfit Digital Bluetooth Scale is a great tool for weight loss. It is one of the most accurate bathroom scales and will track your weight, body mass index and body fat percentage.
Willis Carrier is credited with inventing modern air conditioning in 1902. In 1915, Carrier and six other engineers pooled $32,600 to form the Carrier Engineering Corporation. They purchased their first factory in 1920, in Newark, New Jersey.
ca 1930 Sulzer conceived the âdry pistonâ compressor ca. 1930-35 First market survey of air conditioning ââ¦sent to 2000 high grade men and 500 high grade women.â By Time Magazine 1931 Georges Ranque discovered the production of cold by the vortex effect.