If the screen width is 7 feet and the projector's throw ratio is 2.0 - 2.4:1 (because projectors have zoom lenses, they also have a range of throw ratios) then you can place your projector anywhere from 14 to 16.8 feet away from the screen.
A strain gauge (or strain gage) is a device used to measure strain on an object. Invented by Edward E. Simmons and Arthur C. Ruge in 1938, the most common type of strain gauge consists of an insulating flexible backing which supports a metallic foil pattern.he gauge is far more sensitive to strain in the vertical direction than in the horizontal direction.
  A Force Gauge is a measuring instrument used across all industries to measure the force during a push or pull test. Applications exist in research and development, labor â¦ atory, quality, production and field environment.ewton meter measures energy E. A Newton measures force. A Nm (Newton Metre)is also the unit used to measure TORQUE which is the twistin â¦ g energy available if a force of 1Newton was acting at a radius of 1metre on the end of a shaft.