Double-Parallel Plastic Pulley, 50mm Diameter Lab Equipment and Supplies_Metal Labware Stamped with element symbols for

Stamped with element symbols for quick identification

Cork-lined jaws on this two-prong universal clamp grip glassware without scratching

Hand-painted male pelvis model exposes the narrower male-specific proportions and pelvic inlet shape compared to the female pelvis for sex-difference anatomy teaching

Hand-cranked to convert mechanical work into electrostatic energy

003 mm accuracy at 10 mm

Double-Parallel Plastic Pulley, 50mm Diameter Lab Equipment and Supplies_Metal Labware Stamped with element symbols forDouble parallel plastic pulley with two 50mm wheels in a steel frame and end hooks, a compound unit for demonstrating multi rope mechanical advantage in physics activities.