Adjustable Wooden Funnel Stand for 2 Funnels, 18" Tall, 1.5" Hole Base_Octagonal Twelve-position rotary capacitance substitution box

Twelve-position rotary capacitance substitution box selecting one capacitor at a time

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

Life-size human skeleton model features flexible spine

this metal helix lets stairwell-scale wave-propagation experiments amplify the visibility of standing waves

Adjustable Wooden Funnel Stand for 2 Funnels, 18" Tall, 1.5" Hole Base_Octagonal Twelve-position rotary capacitance substitution boxDesigned for parallel gravity filtration, this polished hardwood funnel stand holds two 1. 5 inch funnels and adjusts up to 17 inches in height for the chemistry bench.