Identify the measured quantity
Determine the instrument precision
Estimate the absolute uncertainty
Calculate the relative uncertainty
Calculate the percentage uncertainty
Combine uncertainties for repeated measurements
Use half the range for repeated readings
Use standard deviation for multiple data points
Add absolute uncertainties for addition and subtraction
Add percentage uncertainties for multiplication and division
Apply uncertainty rules to powers and roots
Report the final value with its uncertainty
Round the uncertainty to one significant figure
Round the measured value to match the uncertainty
State units with the result