Bell in Vacuum, Glass, DC Subcategory_Lab Burner Accessories and a 60mm scale

and a 60mm scale

letting electrophoresis setups switch between short and long separation runs on a single supply

Half life-size circulatory system board traces arterial and venous pathways from heart to peripheral capillaries with numbered

this clear dial provides a readable face for measuring angular displacement in physics setups

Six-range AC/DC moving-coil voltmeter at 3/10/30/100/300/500V with a toggle for AC or DC mode

Bell in Vacuum, Glass, DC Subcategory_Lab Burner Accessories and a 60mm scaleBell in vacuum jar with a 4 6V electric bell suspended on rubber cord inside a 22 by 15cm glass chamber, illustrating that sound cannot travel without air.