Why did the wright brothers use scale models?

Pointy bit on roof of house? How do you install a heli-coil on a 8.5 HP Tecumseh engine? How is metal casting done? What is cg model carol real name? What are the hazards associated with the assembly activited and how can they be minimised? What year was my sears mower model number 917.377280 made? How old do you have to be to become a bikini model? What is the professional title for a pen maker? What are molle loops? What did the shoemaker mad the shoes out of? What is the occupation of people who sell screws nails and tools and hinges? How much will it cost to build a bedroom house in Zimbabwe? What color does yellow and maroon make? What country are stilt houses in? How much does a maybelline models make? Are there different construction methods used for pitched roofs? Craftsman 14 hp kohler quits running after about 30 minutes? What year did they stop producing black mastic asbestos glue? Do they still make Lift master garage door openers? Where did the Doctor get the screwdriver?