darobsr

darobsr

Joined October 19th, 2009
1 Instructables   26,570 Views   0 Comments   2 Followers

Instructables

Make a Balance Scale Accurate to 1/2 Gram, Using a Ruler and 2 Old CDs

Make a Balance Scale Accurate to 1/2 Gram, Using a Ruler and 2 Old CDs

26K Views, 7 Favorites