Pendulum Bobs, Lead, 25mm Subcategory_Wash Bottles 5 inch diameter unit produces

5 inch diameter unit produces a +/-3mm controlled vibration on a string or ripple-tank dipper when driven by an external square-wave generator

sized for hands-on Ohm's-law measurement and series-parallel comparison without rewiring between values

Flat form case with large easily read scale in Metric and Newton range

Ten-pack of 5mm yellow LEDs with diffused round lenses

and vestibular structures at visible scale for group classroom demonstrations of auditory anatomy

Pendulum Bobs, Lead, 25mm Subcategory_Wash Bottles 5 inch diameter unit producesSolid sphere with a small ring for suspension. Comprising a solid sphere with a small ring for suspension. Available in 13mm, 19mm, 25 mm diameters.