Brass Slotted Mass Set with Hanger, 4 x 50g (250g Total) Lab Supplies_Scoops & Spatulas Twelve-position substitution box rotating through

Twelve-position substitution box rotating through 100 ohms to 470k ohms at 1W and plus-or-minus 1%

with a spout for easy pouring

and torsional balance

Entry-level two-part human skull model separates the skull cap to reveal the cranial cavity for introductory head-anatomy teaching at secondary and college levels

Brass Slotted Mass Set with Hanger, 4 x 50g (250g Total) Lab Supplies_Scoops & Spatulas Twelve-position substitution box rotating throughFour 50 gram brass slotted masses paired with a 50 gram hanger, totaling 250 grams for suspension from pulleys, springs, and balance arms during physics force and pressure experiments.