Calculating Apparatus Error: What to Do?

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To calculate the percentage apparatus error when the reading is accurate to the nearest decimal place, the formula 100(0.05/(reading)) is appropriate. The uncertainty remains constant at 0.05, but the percent uncertainty will change based on the measured value. Expressing uncertainty as a percentage can provide insight into the relative size of the error compared to the measurement. However, it's important to understand that the significance of this percentage varies with different readings. Overall, using this formula helps quantify the precision of measurements effectively.
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If I have apparatus reading accurately to the nearest decimal place, in order to work the percentage apparatus error out, do I perform the following calculation:

100(0.05/(reading))?

Thanks
 
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The short answer is yes...

...although I'm not sure why you'd want to express the uncertainty as a percentage of the measured value, because while the uncertainty will always be 0.05 in whatever units the apparatus is measuring, the percent uncertainty will vary depending upon what the measured value is.
 
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