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

Sized for compact classroom display

Hand-painted 4-part human brain model separates into cortical hemispheres and brain-stem regions for lobed-anatomy teaching at introductory biology levels

Designed to measure Planck's constant through the photoelectric effect

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.