Standard Magnetic Field Demonstrator Subcategory_Microtomes Wide sound-radiating surface on this

Wide sound-radiating surface on this lightweight tuning fork lets it stand upright on its own footprint

this nickel-plated brass cork borer set cuts clean holes in cork

this polypropylene double burette clamp fits 10mm or 12

visualizing the relationship between local motion and seismic recording for geology lessons

5V motor-generator on a 6 by 4 by 2-inch base with 4mm socket terminals and a 15mm V-pulley

Standard Magnetic Field Demonstrator Subcategory_Microtomes Wide sound-radiating surface on thisPlastic housed plotting compass field demonstrator that maps the magnetic field configuration in one or two dimensions whenever a permanent magnet is placed against it.