With 1998's Cowboy Bebop, one of the most acclaimed anime TV series ever (go read the comments index for it here on IMDb if you don't believe me!), Shinichiro Watanabe became a creative force to watch out for.
Angle finders use two hinged arms and an integrated protractor-like scale or digital device to read the angles of both inside and outside corners.When using an angle finder, the surface you are checking must be free of high spots and debris, and the protractor arms must be straight to ensure an accurate reading.ngle finders use two hinged arms and an integrated protractor-like scale or digital device to read the angles of both inside and outside corners.
Look at the picture. The angular size, linear size and distance can be calculated using the formulas: Thus, we can find out distance from the object if we knew its size and its angular size. Binoculars often have special marks which helps to find out angular size of observed object.