ruler and a yardstick,mesher,we can mesher a clip bord,ad them up,add all the nuders up,i use a yardstick and measher the chart,measure what you want and then add it up,and i add it up,help other people,to measure a desk and then get a ruler,you can use a yardstick or a ruler. i us,you can use a yardstick and a ruler,uos the ruler,and mesher all the sides.,you can use a ruler or a yardstick. i us,we can use a ruler to measur a book,a ruler and a yardstick and you write it,mesher all the sides,ruler,