Antique Pyrex Labware Burner

A cool, vintage Pyrex Glass faceted labware burner. The laboratory burner has a nice shape, marked Pyrex, with original metal cap. The glass burner measures approximately 4 1/4" tall x 3 3/4" wide. The Pyrex glass is in good condition with no chips or cracks. The metal burner and cap is rusted; however it still unscrews.