Change the Unit without dimension change

hi all,

My guys are having problem i think you all can help me out.

while modeling the part some of them are not aware that they do not know which unit they are working.

mistakenly when they need in Inches but modeled in MM. Like 50Inch is modeled as 50mm.

is there anyway to convert to other units.

thanks for the help.

arun

SolidworksGeneral