Spring-Loaded Projectile Launcher, 10ft Range Subcategory_Cylinders Nineteen-piece electrostatics kit anchored by

Nineteen-piece electrostatics kit anchored by a gold-leaf electroscope

Bulk 144-pack of pre-cleaned 75 x 25mm glass microscope slides features frosted labeling ends and ground polished edges for high-volume teaching labs

fine print

and nuclear division stages for cell division teaching

this simple-circuit kit supplies batteries

Spring-Loaded Projectile Launcher, 10ft Range Subcategory_Cylinders Nineteen-piece electrostatics kit anchored bySpring loaded heavy gauge steel projectile launcher with a string release trigger, dual bore sights, and a 1 degree protractor, firing a 19mm ball up to 10 feet with less than 1cm scatter.