River City Clocks 15 Inch Liquid Galileo Thermometer with Silver Balls & Tags - Model # L3600SN This Galileo Thermometer features five floating silver balls. It has temperature gradients of 4 F from 64 F to 80 F and is accurate to within 4 Functional and decorative! Hanging numerals are easier to read than traditional Galileo Thermoemters Two year warranty included