Tolerance of equipment question

Just to check, if a balance can measure with a graduation of 0.1g is it's tolerance therefore 0.05grams?

Thank you


Posted from TSR Mobile

Yes if the unit is to 1 decimal place then then their is an uncertainty margin of +/- 0.05 e.g. 0.05 would be shown as 0.1 and 0.149 would be shown as 0.1 therefore the actual value could lie anywhere within 0.05<x<0.15

Thank you for your quick response.
I should post this in the Physics forum but I never seem to get a reply so I was wondering if you could help me with this too:

i have a ruler that can measure +-0.5mm, i use this to take a measurement for the length of a piece of card, this gives me 194+-0.5mm, i then use this in a light gate to measure speed, what can the lightgate therefore measure to?



Thank you









Posted from TSR Mobile

Is that the exact question?

Yes, my teacher isn't very good at phrasing questions.


Posted from TSR Mobile

well the lightgate would be measuring speed so the light gate can measure to (194 ± 0.50)mm/time which depends on how accurate it times it.