Premium Dicot Stem Model with Transverse Section, on Base Waves & Oscillation_Sound & Resonance configured to make and break

configured to make and break a circuit at the rhythm of a Morse-code transmission for telegraph-history demonstrations

Base-mounted 2-stroke diesel engine model in aluminum and plastic

Cork-lined jaws on this two-prong universal clamp grip glassware without scratching

Four-metal 32mm density cube set with hooks in brass

101-piece teacher-grade molecular model set with 51 atoms and 50 bonds covering carbon

Premium Dicot Stem Model with Transverse Section, on Base Waves & Oscillation_Sound & Resonance configured to make and breakGreatly magnified transverse dicot stem model on a mounted base exposes vascular bundle arrangement and primary tissue layers for advanced botany teaching.