Name the unit of length which is used to measure the length of a thickness of a coin Share with your friends Share 1 Shalini answered this Basically SI units are used to measure. But in this case it can be millimetre or centimetres 2 View Full Answer Keshav Verma answered this I think centimetres 1 Advika Shukla answered this it can be centi meter 1 Isra Imroz answered this millimetre or centi metre 0 Ashish . answered this Centimeters 0 Aritra Roy answered this Millimetre 1