Linear Measurement

Accuracy and Precision
-Accuracy and precision are two different, yet equally important surveying concepts. 
Accuracy is the degree of conformity of a given measurement with a standard value. 
Precision is the extent to which a given set of measurements agree with their mean.
Measurements are never exact and there will always be a degree of variance regardless of the survey instrument or method used. These variances are known as errors and will need to be reduced or eliminated to maintain specific survey standards.
Even when carefully following established surveying procedures, observations may still contain errors. Errors, by definition, are the difference between a measured value and its true value. The true value of a measurement is determined by taking the mean value of a series of repeated 
measurements. Surveyors must possess skill in instrument operation and knowledge of surveying methods to minimize the amount of error in each measurement.
1. Blunders

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(Hindi) Errors & Adjustment in Surveying : GATE (CE)

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Correction due to incorrect lenght of chain or tape

Correction due to incorrect length of chain (in Hindi)

Course Overview (in Hindi)

Correction due to Slope & Temp. (in Hindi)

Correction due to Pull & Sag (in Hindi)

Limiting lenght of offset (in Hindi)

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Correction due to incorrect length of chain (in Hindi)

Dhananjay Pandya

(Hindi) Errors & Adjustment in Surveying : GATE (CE)

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