20-Piece Materials Collection Set (Magnetic and Non-Magnetic) Subcategory_Racks and Stands Greatly magnified transverse dicot stem

Greatly magnified transverse dicot stem model on a mounted base exposes vascular bundle arrangement and primary tissue layers for advanced botany teaching

Built-in 300mW variable-gain amplifier with 1 megohm input impedance accepts low-output signal generators directly through the included coaxial-to-4mm-plug lead on this enclosed loudspeaker

well-suited for water-displacement and calorimetry work with an included inquiry-based instruction manual

Hook-topped for easy suspension

20-Piece Materials Collection Set (Magnetic and Non-Magnetic) Subcategory_Racks and Stands Greatly magnified transverse dicot stemTwenty 1 inch sample squares spanning ferrous and non ferrous metals, polymers, woods, fabrics, and composites in a labeled 13 x 10 inch plastic sleeve for materials classification work.