[quote author=Fu-Kwun Hwang link=topic=684.msg8360#msg8360 date=1311257378]
I would suggest to keep original display: i.e. in unit of mm.
As far as I know, mm is the unit being in work place (for technician who use calipers).

And it is not difficult for student's to convert between mm and cm.
thank you for your confirmation, i will not re-create a cm version :)

27july 2011
fixed bug where 0.02mm is selected the hints is 11.98 mm is shown as 12.00 + .98 mm the top pointer jump ahead due to a code
the correct code is inserted as
[code]if(unit==0.02)out=((int)(v*50.+dv))/50.; //// 50. instead of 50 fix bug of pointer[/code]