Stainless Steel Slotted Mass Set with Hanger, 9-Piece, 100g Prepared Slides_Botany and a movable disc plug

and a movable disc plug

Adjustable clamp pulley with a 2-inch metal sheave that rotates fully through 9 inches of height adjustment

delivering wheel-driven power to a lamp or a Newton color disc

Frosted glass gas jar cover measures 2

this seasoned hardwood burette stand holds a single burette vertical at the bench for standalone chemistry setups

Stainless Steel Slotted Mass Set with Hanger, 9-Piece, 100g Prepared Slides_Botany and a movable disc plugCorrosion resistant stainless steel slotted mass set bundling nine weights on a hanger with hook for a 100 gram total, sized for precise physics and balance investigations on classroom benches.