Ellimination of Errors by Method of Repetition, errors eliminated by repetition method, learnwithashiso, learn with ashiso

 The following errors are eliminated by method of repetition:-

1. Errors due to eccentricity of verniers and centres are eliminated by taking both vernier readings. 
2. Error due to adjustments of line of collmination and the trunnion axis are eliminated by taking both face readings. 
3. The error due to inaccurate graduations are eliminated by taking the readings at different parts of the circle. 
4. Errors due to inaccurate bisection of the object,  eccentric centering etc., may be too some extent counter balanced in different observations. 

Errors due to slip, displacement of station signals, and want of verticality of the vertical axis etc., are not eliminated since they are all cumulative.