US$ 67.90
and leaf-electroscope demonstrations
delivering controlled slopes for friction
and assorted metal samples for structured lessons
fastened by two wide-pad stainless steel thumb screws under heavy torsional load
supplying the third-color short-reach signal line in 4mm bench circuits already using red and black rails
2-Part Human Brain Model, Median Section Lab Equipment_Sterilization Equipment and leaf-electroscope demonstrationsMedian section hemisphere split reveals the interior surface view including corpus callosum and brainstem, with a paired intact hemisphere for external comparison.
US$ 67.90
US$ 48.99
US$ 38.99