Method of producing a precise horizontal or vertical laser line beam drawn on objectives, and apparatus thereof

A laser line beam emitting apparatus for emitting a laser line beam to objectives comprising a housing;

• a laser beam source unit;
• a laser beam source provided to said laser beam source unit to emit a laser beam therefrom;
• a collimator lens provided in said laser beam source unit for collimating of the emitted laser beam;
• a rod lens provided to said laser beam source unit and having a semitransparent area provided thereto for reflection and diffusion of a part of the collimated, emitted laser beam therefrom in first directions, and a complete transparent area for refraction and diffusion of the rest of the collimated, emitted laser beam therefrom in second directions opposite to said first directions;
• gimbals mechanism provided in said housing;
• and
• a pendulum hung from said gimbals mechanism so as to allow for swinging of said laser beam source unit assembled thereinto.