Adjustable Slit for Optical Bench Racks & Stands_Test Tube Racks visualizing sound-transmission dependence on a

visualizing sound-transmission dependence on a medium

autoclavable and thermal-shock resistant for precise measurement of gas volumes evolved during a reaction

Hand-painted arterial red and venous blue vessels trace the full systemic and pulmonary circulation across a mounted human figure for cardiovascular teaching

25-inch frame with draining pins for post-wash inversion and drying

Adjustable Slit for Optical Bench Racks & Stands_Test Tube Racks visualizing sound-transmission dependence on aVariable slit width on this optical bench attachment lets students vary the aperture of the source for diffraction, single slit interference, and spectral line work.