Sub-topic #5: Types of Accuracy

• Point Accuracy

  • The accuracy of an instrument at a specific point on its scale.
• Point Accuracy

  • It doesn’t tell the overall accuracy of the instrument.
• Accuracy as a Percentage of Scale Range

  • When an instrument has a uniform scale, its accuracy can be expressed in terms of the scale range.
• Accuracy as a Percentage of True Value

  • Measures how close a reading is to the actual value.
• Accuracy as a Percentage of True Value

  • An instrument’s accuracy may be considered acceptable if it is within ± 0.5% of the true value.
• Accuracy as a Percentage of True Value

  • An instrument’s accuracy may be considered acceptable if it is within ± 0.5% of the true value.