Slotted Mass Set, 1000g, Zinc-Cast Subject_Earth Science and Android devices up to

and Android devices up to 4 inches wide for hands-free desktop viewing

Illustrates the sources and effects of air and water pollution on an annotated wall-mountable backboard

bottle in borosilicate glass holds 300mL with interchangeable glass pennyhead stopper for biological oxygen demand testing procedures

Catapult building kit with components that assemble into twelve distinct geometries

Anodized-aluminum air-track glider pair at 100g each

Slotted Mass Set, 1000g, Zinc-Cast Subject_Earth Science and Android devices up to1KG 10 piece set includes 9x 100g weights and 1x 100g hanger ACCURATE 2% accuracy INCLUDES HANGER Includes hanger for easy use and transportation DURABLE & STURDY Weights are made of high quality, powder coated, die cast zinc Made to last GREAT FOR ALL A great alternative to expensive brass sets Designed for use in professional laboratories, but is an ideal choice for science classrooms and household use 10 piece set includes 9x 100g weights and 1x