Metal Stand for Magnetic Needle, 4.5" Tall Human Anatomy_Human Skeletons & Bones equipped with heavy sliders whose

equipped with heavy sliders whose fine index marks give repeatable readouts for image-formation and focal-length measurements

teaching electromagnetism

Meter-stick optical bench fitted with two supports

promoting airflow through glassware and plasticware during post-wash drying on the bench

and chamber walls at a scale visible for group demonstrations

Metal Stand for Magnetic Needle, 4.5" Tall Human Anatomy_Human Skeletons & Bones equipped with heavy sliders whoseNon magnetic metal pillar topped with a carbon steel point on a 2. 25 inch base raises a magnetic needle to a 4. 5 inch height for free spinning compass and magnetometer demonstrations.