Helical Spring and Mass Set Subcategory_Brushes and 2 quadruple pulleys on

and 2 quadruple pulleys on a heavy composite base with capstan

Beaker-themed beer pong set includes 12 polypropylene 500mL beakers and 2 pong balls for chemistry-themed party gameplay

gripping square or round rods up to 16 mm and accommodating flat articles like rulers and drawing boards

Ninety-five-piece molecular model set with 53 atoms and 42 links spanning organic and inorganic chemistry

covering core dispersion and refraction shapes for ray-box optics work

Helical Spring and Mass Set Subcategory_Brushes and 2 quadruple pulleys onTwenty centimeter steel helical spring paired with 2kg, 0. 5kg, and 0. 237kg hooked masses for measuring spring extension under load and calculating spring constants.