Real Coal Specimen with Cotton Bag, Large Lump Glassware_Protectors reading 675-810mm Hg for altitudes

reading 675-810mm Hg for altitudes up to 600 meters

and general magnetic applications

20-40 mesh size

Square-section aluminum tube 1 meter long with side graduations and four sliding riders

Real Coal Specimen with Cotton Bag, Large Lump Glassware_Protectors reading 675-810mm Hg for altitudesOne large lump of coal. Approximately 2. 5"x2"x1. 5" egg or golf ball sized. Please due note that the actual size may very slightly and if you are unhappy with exact size of the coal, you can contact us for a free replacement. Premium cotton muslin bag keeps any created coal dust contained inside the bag Link included on card to an experiment to grow snowflakes on your coal. (Note: There are some additional required ingredients for the experiment that