Pulley Large Demonstration Single, Designed for Classroom Demonstrations, Light-weight, low-friction, and deformation-resistant plastic ensures accurate results, Open to make it easier for users to run pulley cords through them
Glass Rain Gauge, Measures Up to 5in, Stylish easy-to-read design, Use the included mounting bracket to mount to a post or fence, or use it as a garden/yard stake, Durable, Dimension: 2.25x1x6.75in
bottle, borosilicate glass come equipped with an eye dropper pipette for clean dispensing of the stored contents. The clear glass allows for maximum visibility and display of contents. Ideal for labs and classrooms in chemistry applications, Size: 60ml