# Science

posted by .

The sensitivity of a measuring instrument is the value of the smallest quantity that can be read or estimated with it. What is the smallest part of a centimeter that can be read with the following?
(a) a meterstick with markings at each millimeter
I tried
.01 mm
.05 mm
.1 mm
.01cm

all wrong..
(b) a digital caliper with a four-digit display
I tried
.0001 in
.01 mm
.01 in
all wrong as well

• Science -

For a I would think it could be estimated to the nearest 0.5 mm which is 0.05 cm.

For b, the problem doesn't say what the digits mean; i.e., four-digit display of what length? If it is 1234 then it can be read to 1 in the last place, whatever that last place is.

• Science -

the caliper is .0005 cm

• Science -

I know the first one can be .5mm

• Science -

I just had the same question, and the 1st one is .05 cm, and the second is .0005 cm.

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