1. Mercury Thermometer   Thomas Alva Edison   Sir Alexander Graham Bell   John Logie Baird   Fahrenheit   Hint Half-n-half Clue   2. Telegraph Code   Samuel Morse   Thomas Alva Edison   James Watt   Rudolf Diesel   Half-n-half Clue   3. Gramophone   King C. Gillette   John Boyd Dunlop   Charles Goodyear   Thomas Alva Edison   Half-n-half Clue   4. Diesel Engine   Michael Faraday   Rudolf Diesel   Thomas Alva Edison   Alfred B. Nobel   Half-n-half Clue   5. Bifocal Lens   Benjamin Franklin   Thomas Alva Edison   James Watt   Fahrenheit   Half-n-half Clue   6. Dynamite   Samuel Morse   Alfred B. Nobel   King C. Gillette   Thomas Alva Edison   Half-n-half Clue   7. Electric Generator   Alfred B. Nobel   Michael Faraday   John Logie Baird   Thomas Alva Edison   Half-n-half Clue