Capacitance Substitution Box, Model 1138 Capacity_2000mL Compact 14 by 12 by

Compact 14 by 12 by 11 cm autoclavable polypropylene basket organizes test tubes during experiments

Designed to measure Planck's constant through the photoelectric effect

Built to grip round flasks and condensers during distillation or reflux

letting students explore induction

Hand-driven Newton's color disc that spins seven painted segments fast enough to merge into apparent white through persistence-of-vision and additive color mixing

Capacitance Substitution Box, Model 1138 Capacity_2000mL Compact 14 by 12 byTwelve position rotary capacitance substitution box selecting one capacitor at a time, providing a quick swap in reference for general purpose AC circuit and timing experiment work.