Class B Borosilicate Glass Graduated Cylinder with Protective Collar, White Graduations Capacity:500mL and string for harmonic demonstrations

and string for harmonic demonstrations on a magnetic base

this universal clamp holder accepts rods up to 20 mm in diameter and bolts securely to retort stands for oversized load support

Infrared source: Peak at 880 nm

this two-coil demonstration transformer lets students swap primary and secondary windings to watch step-up and step-down voltage shifts firsthand

supplying replacement bulbs for four-cell battery packs and the standard 6V ray-box and panel-lamp apparatus

Class B Borosilicate Glass Graduated Cylinder with Protective Collar, White Graduations Capacity:500mL and string for harmonic demonstrationsPolymer collar protects the neck during tipping or swinging, with high contrast white graduations for reading against darker solutions during routine ASTM compliant measurement.