RENO, Nev. (KOLO) - A balance scale from the 19th century once used to weigh hundreds of millions of dollars’ worth of gold and silver is now being offered up at a Reno auction. The scale was ...

You record the mass of light objects in grams. One way to measure the mass of objects is to use balance scales. A balance scale works by placing the object you want to weigh on one side and adding ...