Wooden Test Tube Support, 7-Place Glass Sets & Apparatus_Distillation Apparatus 5x clear views through a

5x clear views through a 3-inch optical-glass lens with a 6-inch focal length

supporting small-feature eye anatomy teaching

2A with constantan winding on a vitreous-enameled steel tube and a nickel-plated phosphor-bronze sliding contact

and digestive tract for annelid anatomy teaching

7mm thick construction measures 3 inches for sealing gas jars during gas collection procedures

Wooden Test Tube Support, 7-Place Glass Sets & Apparatus_Distillation Apparatus 5x clear views through aDovetail jointed hardwood seven place test tube support holds tubes up to 13 mm in diameter upright during classroom chemistry and benchtop work.