What is the calibration of 372mm, if this number is written with the correct precision?

Question

anonymous · Answer

I think this requires more information

anonymous · Answer

Calibration : The smallest unit on a measuring device. 
Precision: Half of the calibration. 

Ex. If the calibration of a ruler equals 1mm, the precision is 0.5mm. 

Now, if 372mm is written in terms of precision, what is it's calibration?

anonymous · Answer

If the precision is good down to the ones digit, then calibration = twice that... so I think it would be calibrated to within 2mm, which usually is expressed as plus or minus 1 mm.

I'm not 100% sure of this, but that's what I recall.

anonymous · Answer

So, for example, the real answer could be 373 mm or 371 mm... you measured it at 372 mm and your device is calibrated to within plus or minus 1 mm.